diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index aa7d433f..00000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,159 +0,0 @@
-version: 1.3.7-{build}
-
-environment:
-  matrix:
-
-    - PHP_VERSION: 7.0
-      VC_VERSION: 14
-      BUILD_TYPE: "Win32"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      VCVARSALL: "%VS120COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.0
-      VC_VERSION: 14
-      BUILD_TYPE: "nts-Win32"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      VCVARSALL: "%VS120COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.1
-      VC_VERSION: 14
-      BUILD_TYPE: "Win32"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      VCVARSALL: "%VS120COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.1
-      VC_VERSION: 14
-      BUILD_TYPE: "nts-Win32"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      VCVARSALL: "%VS120COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.2
-      VC_VERSION: 15
-      BUILD_TYPE: "Win32"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      VCVARSALL: "%VS140COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.2
-      VC_VERSION: 15
-      BUILD_TYPE: "nts-Win32"
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      VCVARSALL: "%VS140COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.3
-      VC_VERSION: 15
-      BUILD_TYPE: Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      VCVARSALL: "%VS140COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.3
-      VC_VERSION: 15
-      BUILD_TYPE: nts-Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      VCVARSALL: "%VS140COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.4
-      VC_VERSION: 15
-      BUILD_TYPE: Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      VCVARSALL: "%VS140COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 7.4
-      VC_VERSION: 15
-      BUILD_TYPE: nts-Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      VCVARSALL: "%VS140COMNTOOLS%/../../VC/vcvarsall.bat"
-
-    - PHP_VERSION: 8.0
-      VC_VERSION: 16
-      BUILD_TYPE: Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      VCVARSALL: "C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Auxiliary/Build/vcvarsall.bat"
-
-    - PHP_VERSION: 8.0
-      VC_VERSION: 16
-      BUILD_TYPE: nts-Win32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      VCVARSALL: "C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Auxiliary/Build/vcvarsall.bat"
-
-  PHP_SDK_VERSION: 2.1.9
-  PHP_AVM: https://raw.githubusercontent.com/sergeyklay/php-appveyor/master/php-appveyor.psm1
-
-  TEST_PHP_EXECUTABLE: C:\php\php.exe
-  NO_INTERACTION: 1
-  REPORT_EXIT_STATUS: 1
-
-matrix:
-  fast_finish: true
-
-cache:
-  - 'C:\Downloads -> .appveyor.yml'
-
-clone_depth: 1
-clone_folder: C:\Projects\php-zephir-parser
-
-platform:
-  - x86
-  - x64
-
-branches:
-  only:
-    - master
-    - development
-
-init:
-  - ps: $DebugPreference = 'SilentlyContinue' # Continue
-
-install:
-  - ps: (new-object Net.WebClient).DownloadString($Env:PHP_AVM) | iex
-
-  - ps: InstallPhpSdk     $Env:PHP_SDK_VERSION $Env:VC_VERSION $Env:PLATFORM
-  - ps: InstallPhp        $Env:PHP_VERSION $Env:BUILD_TYPE $Env:VC_VERSION $Env:PLATFORM
-  - ps: InstallPhpDevPack $Env:PHP_VERSION $Env:BUILD_TYPE $Env:VC_VERSION $Env:PLATFORM
-
-  - ps: Import-Module .\.ci\AppVeyor.psm1
-  - ps: AppendSessionPath
-  - ps: TuneUpPhp
-
-build_script:
-  - if NOT "%VCVARSALL%" == "" call "%VCVARSALL%" %PLATFORM%
-  - ps: InitializeBuildVars
-  - phpsdk_setvars
-  - cmd /c .ci\build-win32.bat
-  - phpize
-  - cmd: 'configure --with-prefix=C:\php --with-php-build=C:\php-devpack --disable-all --enable-zephir-parser=shared'
-  - cmd: nmake 2> compile-errors.log 1> compile.log
-  - ps: InitializeReleaseVars
-
-test_script:
-  - ps: >-
-      EnablePhpExtension `
-        -Name          zephir_parser `
-        -PrintableName "Zephir Parser" `
-        -ExtPath       $Env:RELEASE_PATH
-
-after_test:
-  - ps: >-
-      PrepareReleasePackage `
-        -PhpVersion     $Env:PHP_VERSION `
-        -BuildType      $Env:BUILD_TYPE `
-        -Platform       $Env:PLATFORM `
-        -ConverMdToHtml $true `
-        -ReleaseFiles   "${Env:RELEASE_PATH}\php_zephir_parser.dll",`
-                        "${Env:APPVEYOR_BUILD_FOLDER}\LICENSE",`
-                        "${Env:APPVEYOR_BUILD_FOLDER}\CREDITS",`
-                        "${Env:APPVEYOR_BUILD_FOLDER}\VERSION",`
-                        "${Env:APPVEYOR_BUILD_FOLDER}\NO_WARRANTY"
-
-artifacts:
-  - path: '.\$(RELEASE_ZIPBALL).zip'
-    type: zip
-    name: ZephirParser
-
-on_failure:
-  - ps: >-
-      if (Test-Path -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile-errors.log") {
-        Get-Content -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile-errors.log"
-      }
-      if (Test-Path -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile.log") {
-        Get-Content -Path "${Env:APPVEYOR_BUILD_FOLDER}\compile.log"
-      }
diff --git a/.ci/AppVeyor.psm1 b/.ci/AppVeyor.psm1
deleted file mode 100644
index d4887f7b..00000000
--- a/.ci/AppVeyor.psm1
+++ /dev/null
@@ -1,75 +0,0 @@
-# This file is part of the Zephir Parser.
-#
-# (c) Zephir Team <team@zephir-lang.com>
-#
-# For the full copyright and license information, please view
-# the LICENSE file that was distributed with this source code.
-
-Function InitializeBuildVars {
-	If ($Env:PLATFORM -eq 'x64') {
-		$Env:ARCH = 'x86_amd64'
-	} Else {
-		$Env:ARCH = 'x86'
-	}
-}
-
-Function InitializeReleaseVars {
-	If ($Env:BUILD_TYPE -Match "nts-Win32") {
-		$Env:RELEASE_ZIPBALL = "zephir_parser_${Env:PLATFORM}_vc${Env:VC_VERSION}_php${Env:PHP_VERSION}-nts_${Env:APPVEYOR_BUILD_VERSION}"
-
-		If ($Env:PLATFORM -eq 'x86') {
-			$Env:RELEASE_FOLDER = "Release"
-		} Else {
-			$Env:RELEASE_FOLDER = "x64\Release"
-		}
-	} Else {
-		$Env:RELEASE_ZIPBALL = "zephir_parser_${Env:PLATFORM}_vc${Env:VC_VERSION}_php${Env:PHP_VERSION}_${Env:APPVEYOR_BUILD_VERSION}"
-
-		If ($Env:PLATFORM -eq 'x86') {
-			$Env:RELEASE_FOLDER = "Release_TS"
-		} Else {
-			$Env:RELEASE_FOLDER = "x64\Release_TS"
-		}
-	}
-
-	$Env:RELEASE_PATH = "${Env:APPVEYOR_BUILD_FOLDER}\${Env:RELEASE_FOLDER}"
-}
-
-Function AppendSessionPath {
-	[string[]] $PathsCollection = @(
-		"${Env:VSCOMNTOOLS}\..\..\VC",
-		"C:\Program Files (x86)\Microsoft Visual Studio ${Env:VC_VERSION}.0\VC",
-		"C:\Program Files (x86)\Microsoft Visual Studio ${Env:VC_VERSION}.0\VC\bin",
-		"${Env:VSCOMNTOOLS}",
-		"C:\php"
-		"C:\php\bin"
-		"C:\php-sdk\bin",
-		"C:\php-devpack"
-	)
-
-	$CurrentPath = (Get-Item -Path ".\" -Verbose).FullName
-
-	ForEach ($PathItem In $PathsCollection) {
-		Set-Location Env:
-		$AllPaths = (Get-ChildItem Path).value.split(";")  | Sort-Object -Unique
-		$AddToPath = $true
-
-		ForEach ($AddedPath In $AllPaths) {
-			If (-not "${AddedPath}") {
-				continue
-			}
-
-			$AddedPath = $AddedPath -replace '\\$', ''
-
-			If ($PathItem -eq $AddedPath) {
-				$AddToPath = $false
-			}
-		}
-
-		If ($AddToPath) {
-			$Env:Path += ";$PathItem"
-		}
-	}
-
-	Set-Location "${CurrentPath}"
-}
diff --git a/.ci/build-win32.bat b/.ci/build-win32.bat
deleted file mode 100644
index 34bc2110..00000000
--- a/.ci/build-win32.bat
+++ /dev/null
@@ -1,19 +0,0 @@
-@ECHO off
-
-REM This file is part of the Zephir Parser.
-REM
-REM (c) Zephir Team <team@zephir-lang.com>
-REM
-REM For the full copyright and license information, please view
-REM the LICENSE file that was distributed with this source code.
-
-REM Rewrite this using PowerShell
-CD parser
-
-cl lemon.c
-DEL zephir.c zephir.h parser.c scanner.c
-re2c -o scanner.c scanner.re
-lemon -s zephir.lemon
-ECHO #include ^<php.h^> > parser.c
-TYPE zephir.c >> parser.c
-TYPE base.c >> parser.c
diff --git a/.ci/lemon-parser.ps1 b/.ci/lemon-parser.ps1
new file mode 100644
index 00000000..567654c7
--- /dev/null
+++ b/.ci/lemon-parser.ps1
@@ -0,0 +1,45 @@
+# This file is part of the Zephir Parser.
+#
+# (c) Zephir Team <team@zephir-lang.com>
+#
+# For the full copyright and license information, please view
+# the LICENSE file that was distributed with this source code.
+
+Write-Output "-- Compiling Lemon parser..."
+$LemonSrc = Join-Path -Path './parser' -ChildPath 'lemon.c'
+$LemonBin = Join-Path -Path './parser' -ChildPath 'lemon.exe'
+
+if ($IsWindows) {
+    & cl /Fe${LemonExe} ${LemonSrc}
+}
+else {
+    $LemonBin = Join-Path -Path './parser' -ChildPath 'lemon'
+    & gcc ${LemonSrc} -o ${LemonBin}
+}
+& ${LemonBin} -x
+
+Write-Output "-- Cleanup initial file state..."
+
+$AutoFiles = "./parser/zephir.c",
+             "./parser/zephir.h",
+             "./parser/parser.c",
+             "./parser/scanner.c"
+
+foreach ($GeneratedFile in $AutoFiles) {
+    if (Test-Path -Path $GeneratedFile) {
+        Remove-Item $GeneratedFile
+    }
+}
+
+Write-Output "-- Run re2c..."
+& re2c -o (Join-Path -Path './parser' -ChildPath 'scanner.c') (Join-Path -Path './parser' -ChildPath 'scanner.re')
+
+Write-Output "-- Generating zephir.c file with lemon parser..."
+& ${LemonBin} -s (Join-Path -Path './parser' -ChildPath 'zephir.lemon')
+
+Write-Output "-- Generating parser.c file..."
+$ParserC = Join-Path -Path './parser' -ChildPath 'parser.c'
+$ZephirC = Join-Path -Path './parser' -ChildPath 'zephir.c'
+$BaseC   = Join-Path -Path './parser' -ChildPath 'base.c'
+Set-Content -Path ${ParserC} -Value '#include <php.h>'
+Get-Content ${ZephirC}, ${BaseC} | Add-Content ${ParserC}
diff --git a/.ci/release-notes.sh b/.ci/release-notes.sh
new file mode 100755
index 00000000..03492db3
--- /dev/null
+++ b/.ci/release-notes.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+# This file is part of the Zephir Parser.
+#
+# (c) Zephir Team <team@zephir-lang.com>
+#
+# For the full copyright and license information, please view
+# the LICENSE file that was distributed with this source code.
+
+
+# -e  Exit immediately if a command exits with a non-zero status.
+# -u  Treat unset variables as an error when substituting.
+
+set -eu
+set -o pipefail
+
+# Get Release notes for the latest release from CHANGELOG.md
+# How to use:
+#   release-notes.sh CHANGELOG.md
+
+startline=$(cat "$1" | grep -nE '^### ' | head -n 1 | cut -d ":" -f 1)
+finishline=$(($(cat "$1" | grep -nE '^## \[[0-9]+' | head -n 2 | tail -n 1 | cut -d ":" -f 1) - 1))
+changelog=$(sed -n "${startline},${finishline}p" "$1");
+
+
+: "${GITHUB_ACTIONS:=0}"
+
+if [ "$GITHUB_ACTIONS" = "true" ]
+then
+	changelog="${changelog//'%'/'%25'}"
+	changelog="${changelog//$'\n'/'%0A'}"
+	changelog="${changelog//$'\r'/'%0D'}"
+fi
+
+echo "${changelog}"
diff --git a/.ci/win-ci-tools.psm1 b/.ci/win-ci-tools.psm1
new file mode 100644
index 00000000..19869b11
--- /dev/null
+++ b/.ci/win-ci-tools.psm1
@@ -0,0 +1,417 @@
+# This file is part of the Zephir Parser.
+#
+# (c) Zephir Team <team@zephir-lang.com>
+#
+# For the full copyright and license information, please view
+# the LICENSE file that was distributed with this source code.
+
+function SetupCommonEnvironment {
+    <#
+        .SYNOPSIS
+            Creates common directories if not exists
+    #>
+
+    $CommonPath = "C:\Downloads", "C:\Downloads\Choco"
+
+    foreach ($path in $CommonPath) {
+        if (-not (Test-Path $path)) {
+            New-Item -ItemType Directory -Force -Path $path | Out-Null
+        }
+    }
+
+    # Hide "You are in 'detached HEAD' state" message
+    git config --global advice.detachedHead false
+}
+
+function InitializeReleaseVars {
+    <#
+        .SYNOPSIS
+            Configures Environment variables for Release build.
+    #>
+
+    # Build artifacts should be names like this:
+    # zephir-parser-php-7.0-nts-win32-vc14-x86.zip
+    # zephir-parser-php-7.0-ts-win32-vc14-x64.zip
+
+    $VC_Prefix = "vc"
+    if (${env:VC_VERSION} -ge 16) {
+        $VC_Prefix = "vc"
+    }
+
+    # Configure for Windows define `BUILD_DIR` using the next logic:
+    #
+    # Release ZTS x86 => Release_TS\php_zephir_parser.dll
+    # Release NTS x86 => Release\php_zephir_parser.dll
+    # Release ZTS x64 => x64\Release_TS\php_zephir_parser.dll
+    # Release NTS x64 => x64\Release\php_zephir_parser.dll
+
+    $env:RELEASE_FOLDER = "Release"
+    if (${env:BUILD_TYPE} -eq 'ts') {
+        $env:RELEASE_FOLDER = -join($env:RELEASE_FOLDER, "_TS")
+    }
+
+    if (${env:PHP_ARCH} -eq 'x64') {
+        $env:RELEASE_FOLDER = -join("x64\", $env:RELEASE_FOLDER)
+    }
+
+    $env:RELEASE_DLL_PATH = "${env:GITHUB_WORKSPACE}\${env:RELEASE_FOLDER}\${env:EXTENSION_FILE}"
+    $env:RELEASE_ZIPBALL = "zephir-parser-php-${env:PHP_MINOR}-${env:BUILD_TYPE}-win32-${VC_Prefix}${env:VC_VERSION}-${env:PHP_ARCH}"
+
+    Write-Output "RELEASE_FOLDER=${env:RELEASE_FOLDER}" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+    Write-Output "RELEASE_ZIPBALL=${env:RELEASE_ZIPBALL}" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+    Write-Output "RELEASE_DLL_PATH=${env:RELEASE_DLL_PATH}" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+}
+
+function InstallPhpSdk {
+    <#
+        .SYNOPSIS
+            Install PHP SDK binary tools from sources.
+    #>
+
+    Write-Output "Install PHP SDK binary tools: ${env:PHP_SDK_VERSION}"
+
+    $PhpSdk = "php-sdk-${env:PHP_SDK_VERSION}.zip"
+    $RemoteUrl = "https://github.com/microsoft/php-sdk-binary-tools/archive/${PhpSdk}"
+    $DestinationPath = "C:\Downloads\${PhpSdk}"
+
+    if (-not (Test-Path $env:PHP_SDK_PATH)) {
+        if (-not [System.IO.File]::Exists($DestinationPath)) {
+            Write-Output "Downloading PHP SDK binary tools: $RemoteUrl ..."
+            DownloadFile $RemoteUrl $DestinationPath
+        }
+
+        $DestinationUnzipPath = "${env:Temp}\php-sdk-binary-tools-php-sdk-${env:PHP_SDK_VERSION}"
+
+        if (-not (Test-Path "$DestinationUnzipPath")) {
+            Expand-Item7zip $DestinationPath $env:Temp
+        }
+
+        Move-Item -Path $DestinationUnzipPath -Destination $env:PHP_SDK_PATH
+    }
+}
+
+function InstallPhpDevPack {
+    <#
+        .SYNOPSIS
+            Intstall PHP Developer pack from sources.
+    #>
+
+    Write-Output "Install PHP Dev pack: ${env:PHP_VERSION}"
+
+    $TS = Get-ThreadSafety
+
+    if ($env:VC_VERSION -gt 15) {
+        $VSPrefix = "VS"
+        $VSPrefixSmall = "vs"
+    } else {
+        $VSPrefix = "VC"
+        $VSPrefixSmall = "vc"
+    }
+
+    $BaseUrl = "http://windows.php.net/downloads/releases"
+    $DevPack = "php-devel-pack-${env:PHP_VERSION}${TS}-Win32-${VSPrefixSmall}${env:VC_VERSION}-${env:PHP_ARCH}.zip"
+
+    $RemoteUrl = "${BaseUrl}/${DevPack}"
+    $RemoteArchiveUrl = "${BaseUrl}/archives/${DevPack}"
+    $DestinationPath = "C:\Downloads\php-devel-pack-${env:PHP_VERSION}${TS}-${VSPrefix}${env:VC_VERSION}-${env:PHP_ARCH}.zip"
+
+    if (-not (Test-Path $env:PHP_DEVPACK)) {
+        if (-not [System.IO.File]::Exists($DestinationPath)) {
+            DownloadFileUsingAlternative -RemoteUrl $RemoteUrl `
+                -RemoteArchiveUrl $RemoteArchiveUrl `
+                -DestinationPath $DestinationPath `
+                -Message "Downloading PHP Dev pack"
+        }
+
+        $DestinationUnzipPath = "${env:Temp}\php-${env:PHP_VERSION}-devel-${VSPrefix}${env:VC_VERSION}-${env:PHP_ARCH}"
+
+        if (-not (Test-Path "$DestinationUnzipPath")) {
+            Expand-Item7zip $DestinationPath $env:Temp
+        }
+
+        Move-Item -Path $DestinationUnzipPath -Destination $env:PHP_DEVPACK
+    }
+}
+
+function DownloadFileUsingAlternative {
+    <#
+        .SYNOPSIS
+            Downloads files from URL using alternative ULR if primary URL not found
+    #>
+
+    [CmdletBinding()]
+    param(
+        [parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidateNotNullOrEmpty()] [System.String] $RemoteUrl,
+        [parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidateNotNullOrEmpty()] [System.String] $RemoteArchiveUrl,
+        [parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidateNotNullOrEmpty()] [System.String] $DestinationPath,
+        [parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidateNotNullOrEmpty()] [System.String] $Message
+    )
+
+    process {
+        try {
+            Write-Output "${Message}: ${RemoteUrl} ..."
+            DownloadFile $RemoteUrl $DestinationPath
+        } catch [System.Net.WebException] {
+            Write-Output "${Message} from archive: ${RemoteArchiveUrl} ..."
+            DownloadFile $RemoteArchiveUrl $DestinationPath
+        }
+    }
+}
+
+function DownloadFile {
+    <#
+        .SYNOPSIS
+            Downloads file from providing URL to specified destionation.
+
+        .NOTES
+            Throws System.Net.WebException if $RequestUrl not found.
+    #>
+
+    [CmdletBinding()]
+    param(
+        [parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $RemoteUrl,
+        [parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $DestinationPath
+    )
+
+    process {
+        $RetryMax   = 5
+        $RetryCount = 0
+        $Completed  = $false
+
+        $WebClient = New-Object System.Net.WebClient
+        $WebClient.Headers.Add('User-Agent', 'GitHub Actions PowerShell Script')
+
+        while (-not $Completed -or $RetryCount -eq $RetryMax) {
+            try {
+                $WebClient.DownloadFile($RemoteUrl, $DestinationPath)
+                $Completed = $true
+            } catch [System.Net.WebException] {
+                $ErrorMessage = $_.Exception.Message
+
+                if ($_.Exception.Response.StatusCode -eq 404) {
+                    Write-Warning -Message "Error downloading ${RemoteUrl}: $ErrorMessage"
+                    throw [System.Net.WebException] "Error downloading ${RemoteUrl}"
+                }
+
+                if ($RetryCount -ge $RetryMax) {
+                    Write-Output "Error downloading ${RemoteUrl}: $ErrorMessage"
+                    $Completed = $true
+                } else {
+                    $RetryCount++
+                }
+            }
+        }
+    }
+}
+
+function Expand-Item7zip {
+    <#
+        .SYNOPSIS
+            Extracts ZIP archives to specified directory
+    #>
+
+    param(
+        [Parameter(Mandatory = $true)] [System.String] $Archive,
+        [Parameter(Mandatory = $true)] [System.String] $Destination
+    )
+
+    if (-not (Test-Path -Path $Archive -PathType Leaf)) {
+        throw "Specified archive File is invalid: [$Archive]"
+    }
+
+    if (-not (Test-Path -Path $Destination -PathType Container)) {
+        New-Item $Destination -ItemType Directory | Out-Null
+    }
+
+    $Result = (& 7z x "$Archive" "-o$Destination" -aoa -bd -y -r)
+
+    if ($LastExitCode -ne 0) {
+        Write-Output "An error occurred while unzipping [$Archive] to [$Destination]. Error code was: ${LastExitCode}"
+        Exit $LastExitCode
+    }
+}
+
+function Get-ThreadSafety {
+    <#
+        .SYNOPSIS
+            Detects if Build is Thread Safety or not and returns `ts` suffix.
+    #>
+
+    if ($env:BUILD_TYPE -Match "nts") {
+        return "-nts"
+    }
+
+    return [string]::Empty
+}
+
+function AppendSessionPath {
+    [string[]] $PathsCollection = @(
+        "${Env:VSCOMNTOOLS}\..\..\VC",
+        "C:\Program Files (x86)\Microsoft Visual Studio ${Env:VC_VERSION}.0\VC",
+        "C:\Program Files (x86)\Microsoft Visual Studio ${Env:VC_VERSION}.0\VC\bin",
+        "${Env:VSCOMNTOOLS}",
+        "C:\php"
+        "C:\php\bin"
+        "C:\php-sdk\bin",
+        "C:\php-devpack"
+    )
+
+    $CurrentPath = (Get-Item -Path ".\" -Verbose).FullName
+
+    ForEach ($PathItem In $PathsCollection) {
+        Set-Location Env:
+        $AllPaths = (Get-ChildItem Path).value.split(";")  | Sort-Object -Unique
+        $AddToPath = $true
+
+        ForEach ($AddedPath In $AllPaths) {
+            If (-not "${AddedPath}") {
+                continue
+            }
+
+            $AddedPath = $AddedPath -replace '\\$', ''
+
+            If ($PathItem -eq $AddedPath) {
+                $AddToPath = $false
+            }
+        }
+
+        If ($AddToPath) {
+            $Env:Path += ";$PathItem"
+        }
+    }
+
+    Set-Location "${CurrentPath}"
+}
+
+function EnableExtension {
+    <#
+        .SYNOPSIS
+            Enables PHP Extension.
+    #>
+
+    if (-not (Test-Path env:RELEASE_DLL_PATH)) {
+        InitializeReleaseVars
+    }
+
+    if (-not (Test-Path "${env:RELEASE_DLL_PATH}")) {
+        throw "Unable to locate extension path: ${env:RELEASE_DLL_PATH}"
+    }
+
+    Copy-Item -Path "${env:RELEASE_DLL_PATH}" -Destination "${env:PHPROOT}\ext\"
+
+    Enable-PhpExtension -Extension 'Zephir Parser' -Path "${env:PHPROOT}"
+}
+
+function PrepareReleasePackage {
+    param (
+        [Parameter(Mandatory=$true)]  [System.String] $PhpVersion,
+        [Parameter(Mandatory=$true)]  [System.String] $BuildType,
+        [Parameter(Mandatory=$true)]  [System.String] $Platform,
+        [Parameter(Mandatory=$false)] [System.String] $ZipballName = '',
+        [Parameter(Mandatory=$false)] [System.String[]] $ReleaseFiles = @(),
+        [Parameter(Mandatory=$false)] [System.String] $ReleaseFile = 'RELEASE.txt',
+        [Parameter(Mandatory=$false)] [System.Boolean] $ConvertMd2Html = $false,
+        [Parameter(Mandatory=$false)] [System.String] $BasePath = '.'
+    )
+
+    $BasePath = Resolve-Path $BasePath
+    $ReleaseDirectory = "${Env:GITHUB_ACTOR}-${Env:RUNNER_OS}-${Env:GITHUB_JOB}-${Env:GITHUB_RUN_NUMBER}"
+
+    Write-Output "ReleaseDirectory: ${ReleaseDirectory}"
+
+    PrepareReleaseNote `
+        -PhpVersion       $PhpVersion `
+        -BuildType        $BuildType `
+        -Platform         $Platform `
+        -ReleaseFile      $ReleaseFile `
+        -ReleaseDirectory $ReleaseDirectory `
+        -BasePath         $BasePath
+
+    $ReleaseDestination = "${BasePath}\${ReleaseDirectory}"
+
+    $CurrentPath = Resolve-Path '.'
+
+    if ($ConvertMd2Html) {
+        FormatReleaseFiles -ReleaseDirectory $ReleaseDirectory
+    }
+
+    if ($ReleaseFiles.count -gt 0) {
+        foreach ($File in $ReleaseFiles) {
+            Copy-Item "${File}" "${ReleaseDestination}"
+            Write-Debug "Copy ${File} to ${ReleaseDestination}"
+        }
+    }
+
+    if (!$ZipballName) {
+        if (!$Env:RELEASE_ZIPBALL) {
+            throw "Required parameter `"ZipballName`" is missing"
+        } else {
+            $ZipballName = $Env:RELEASE_ZIPBALL;
+        }
+    }
+
+    Set-Location "${ReleaseDestination}"
+    $Output = (& 7z a "${ZipballName}.zip" *)
+    $ExitCode = $LASTEXITCODE
+
+    $DirectoryContents = Get-ChildItem -Path "${ReleaseDestination}"
+    Write-Debug ($DirectoryContents | Out-String)
+
+    if ($ExitCode -ne 0) {
+        Set-Location "${CurrentPath}"
+        throw "An error occurred while creating release zipball: `"${ZipballName}`". ${Output}"
+    }
+
+    Move-Item "${ZipballName}.zip" -Destination "${BasePath}"
+    Write-Output "Release file created: ${BasePath}\${ZipballName}.zip"
+    Set-Location "${CurrentPath}"
+}
+
+function PrepareReleaseNote {
+    param (
+        [Parameter(Mandatory=$true)]  [System.String] $PhpVersion,
+        [Parameter(Mandatory=$true)]  [System.String] $BuildType,
+        [Parameter(Mandatory=$true)]  [System.String] $Platform,
+        [Parameter(Mandatory=$false)] [System.String] $ReleaseFile,
+        [Parameter(Mandatory=$false)] [System.String] $ReleaseDirectory,
+        [Parameter(Mandatory=$false)] [System.String] $BasePath
+    )
+
+    $Destination = "${BasePath}\${ReleaseDirectory}"
+
+    if (-not (Test-Path $Destination)) {
+        New-Item -ItemType Directory -Force -Path "${Destination}" | Out-Null
+    }
+
+    $ReleaseFile = "${Destination}\${ReleaseFile}"
+    $ReleaseDate = Get-Date -Format o
+
+    $Version = Get-Content (Join-Path -Path ${BasePath} -ChildPath 'VERSION') -First 1
+
+    Write-Output "Release date: ${ReleaseDate}"      | Out-File -Encoding "ASCII" -Append "${ReleaseFile}"
+    Write-Output "Release version: ${Version}"       | Out-File -Encoding "ASCII" -Append "${ReleaseFile}"
+    Write-Output "Git commit: ${Env:GITHUB_SHA}"     | Out-File -Encoding "ASCII" -Append "${ReleaseFile}"
+    Write-Output "Build type: ${BuildType}"          | Out-File -Encoding "ASCII" -Append "${ReleaseFile}"
+    Write-Output "Platform: ${Platform}"             | Out-File -Encoding "ASCII" -Append "${ReleaseFile}"
+    Write-Output "Target PHP version: ${PhpVersion}" | Out-File -Encoding "ASCII" -Append "${ReleaseFile}"
+}
+
+function FormatReleaseFiles {
+    param (
+        [Parameter(Mandatory=$true)]  [System.String] $ReleaseDirectory,
+        [Parameter(Mandatory=$false)] [System.String] $BasePath = '.'
+    )
+
+    $CurrentPath = (Get-Item -Path ".\" -Verbose).FullName
+
+    $BasePath = Resolve-Path $BasePath
+    Set-Location "${BasePath}"
+
+    Get-ChildItem (Get-Item -Path ".\" -Verbose).FullName *.md |
+    ForEach-Object{
+        $BaseName = $_.BaseName
+        pandoc -f markdown -t html5 "${BaseName}.md" > "${BasePath}\${ReleaseDirectory}\${BaseName}.html"
+    }
+
+    Set-Location "${CurrentPath}"
+}
diff --git a/.editorconfig b/.editorconfig
index b5023d03..e5cfdb0b 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -11,7 +11,7 @@ indent_size = 4
 charset = utf-8
 trim_trailing_whitespace = true
 
-[*.{yml,m4,sh,md,php,phpt,xml,json,w32}]
+[*.{yml,m4,sh,md,php,phpt,xml,json,w32,ps1,psm1}]
 indent_style = space
 
 [*.{yml,m4,sh}]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..16570bc0
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,403 @@
+name: Zephir Parser CI
+
+on:
+  schedule:
+    - cron: '0 2 * * *' # Daily at 02:00 runs only on default branch
+  push:
+    branches-ignore:
+      - 'wip-*'
+    paths-ignore:
+      - '*.md'
+  pull_request:
+    paths-ignore:
+      - '*.md'
+    branches:
+      - master
+      - development
+
+env:
+  RE2C_VERSION: 2.2
+  PHP_SDK_VERSION: 2.2.0
+  PHP_DEVPACK: C:\tools\php-devpack
+  PHP_SDK_PATH: C:\tools\php-sdk
+  EXTENSION_FILE: php_zephir_parser.dll
+
+jobs:
+  windows-builds:
+    # To prevent build a particular commit use
+    #     git commit -m "......... [win skip] - skip Windows builds only"
+    #     git commit -m "......... [ci skip]  - skip all builds"
+    if: "!contains(github.event.head_commit.message, '[win skip]') || !contains(github.event.head_commit.message, '[ci skip]') "
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        php: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0']
+        arch: ['x86', 'x64']
+        build_type: ['ts', 'nts']
+
+        include:
+          - php: '7.0'
+            vc_num: 14
+            vc_prefix: 'vc'
+            os: windows-2016
+
+          - php: '7.1'
+            vc_num: 14
+            vc_prefix: 'vc'
+            os: windows-2016
+
+          - php: '7.2'
+            vc_num: 15
+            vc_prefix: 'vc'
+            os: windows-2016
+
+          - php: '7.3'
+            vc_num: 15
+            vc_prefix: 'vc'
+            os: windows-2016
+
+          - php: '7.4'
+            vc_num: 15
+            vc_prefix: 'vc'
+            os: windows-2016
+
+          - php: '8.0'
+            vc_num: 16
+            vc_prefix: 'vs'
+            os: windows-2019
+
+    name: "PHP-${{ matrix.php }}-${{ matrix.build_type }}-win32-${{ matrix.vc_prefix }}${{ matrix.vc_num }}-${{ matrix.arch }}"
+    runs-on: ${{ matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 1
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          coverage: none
+        env:
+          PHPTS: ${{ matrix.build_type }}
+
+      - name: Set Environment Variables
+        run: |
+          Write-Output "PHP_VERSION=$(php -r 'echo phpversion();')" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          Write-Output "PHP_MINOR=${{ matrix.php }}"                | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          Write-Output "TEST_PHP_EXECUTABLE=${env:PHPROOT}\php.exe" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          Write-Output "BUILD_TYPE=${{ matrix.build_type }}"        | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          Write-Output "VC_VERSION=${{ matrix.vc_num }}"            | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          Write-Output "PHP_ARCH=${{ matrix.arch }}"                | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          Write-Output "BUILD_VERSION=${env:GITHUB_RUN_NUMBER}"     | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+
+      - name: Setup Common Environmet
+        run: |
+          Import-Module .\.ci\win-ci-tools.psm1
+          SetupCommonEnvironment
+          InitializeReleaseVars
+
+      - name: Cache Downloads
+        uses: actions/cache@v2
+        with:
+          path: C:\Downloads
+          key: ${{ runner.os }}-zephir_parser-php-${{ matrix.php }}-${{ matrix.build_type }}-win32-${{ matrix.vc_prefix }}${{ matrix.vc_num }}-${{ matrix.arch }}
+
+      - name: Install System Dependencies
+        run: |
+          choco install -y --no-progress --cache-location=C:\Downloads\Choco pandoc
+
+      - name: Install PHP SDK Binary Tools
+        run: |
+          Import-Module .\.ci\win-ci-tools.psm1
+          InstallPhpSdk
+
+      - name: Install PHP Dev pack
+        run: |
+          Import-Module .\.ci\win-ci-tools.psm1
+          InstallPhpDevPack
+
+      - name: Install MSVC Compiler Tool
+        uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: ${{ matrix.arch }}
+
+      - name: Set PHP SDK Environment variables
+        shell: cmd
+        run: |
+          call C:\tools\php-sdk\phpsdk-${{ matrix.vc_prefix }}${{ matrix.vc_num }}-${{ matrix.arch }}.bat
+          call C:\tools\php-sdk\bin\phpsdk_setvars.bat
+
+      - name: Parse Zephir Parser (Lemon)
+        shell: cmd
+        run: |
+          call C:\tools\php-sdk\bin\phpsdk_setvars.bat
+          powershell.exe -File .\.ci\lemon-parser.ps1
+
+      - name: Phpize
+        shell: cmd
+        run: |
+          call C:\tools\php-devpack\phpize.bat
+
+      - name: Configure
+        shell: cmd
+        run: |
+          call C:\tools\php-sdk\phpsdk-${{ matrix.vc_prefix }}${{ matrix.vc_num }}-${{ matrix.arch }}.bat
+          call C:\tools\php-sdk\bin\phpsdk_setvars.bat
+          configure --with-codegen-arch=yes --with-prefix=C:\php --with-php-build=C:\php-devpack --disable-all --enable-zephir-parser=shared
+
+      - name: Compile
+        shell: cmd
+        run: |
+          call C:\tools\php-sdk\phpsdk-${{ matrix.vc_prefix }}${{ matrix.vc_num }}-${{ matrix.arch }}.bat
+          call C:\tools\php-sdk\bin\phpsdk_setvars.bat
+          nmake
+
+      - name: Get Zephir Parser extension info
+        run: |
+          Get-Php "${env:PHPROOT}"
+          Get-PhpExtension "${env:RELEASE_DLL_PATH}"
+          & ${env:TEST_PHP_EXECUTABLE} --ini
+
+      - name: Enable Zephir Parser
+        run: |
+          Add-Content -Path "${env:PHPROOT}\php.ini" -Value 'extension=php_zephir_parser.dll'
+          Copy-Item -Path "${env:RELEASE_DLL_PATH}" -Destination "${env:PHPROOT}\ext\"
+
+      # Run tests only for x64 PHP builds (Windows currently not support setup php with multi arch)
+      - name: Run Tests
+        if: matrix.arch == 'x64'
+        run: |
+          & ${env:TEST_PHP_EXECUTABLE} --ri 'Zephir Parser'
+          & ${env:TEST_PHP_EXECUTABLE} run-tests.php
+
+      - name: Prepare Release Package
+        run: |
+          Import-Module .\.ci\win-ci-tools.psm1
+          PrepareReleasePackage `
+                  -PhpVersion     $Env:PHP_VERSION `
+                  -BuildType      $Env:BUILD_TYPE `
+                  -Platform       $Env:PLATFORM `
+                  -ZipballName    $Env:RELEASE_ZIPBALL `
+                  -ConvertMd2Html $true `
+                  -ReleaseFiles   "${Env:RELEASE_DLL_PATH}",`
+                                  "${Env:GITHUB_WORKSPACE}\LICENSE",`
+                                  "${Env:GITHUB_WORKSPACE}\CREDITS",`
+                                  "${Env:GITHUB_WORKSPACE}\VERSION",`
+                                  "${Env:GITHUB_WORKSPACE}\NO_WARRANTY"
+
+      - name: Upload Zephir Parser
+        uses: actions/upload-artifact@v2
+        with:
+          name: zephir-parser-php-${{ matrix.php }}-${{ matrix.build_type }}-win32-${{ matrix.vc_prefix }}${{ matrix.vc_num }}-${{ matrix.arch }}.zip
+          path: |
+            ${{ github.workspace }}\zephir-parser-*.zip
+
+      - name: Check for Errors
+        if: always()
+        run: |
+          Get-ChildItem (Get-Item -Path ".\" -Verbose).FullName *.log |
+          ForEach-Object{
+            $BaseName = $_.BaseName
+            Write-Output "-- Log details: ${BaseName}.log --"
+            Get-Content -Path "${env:GITHUB_WORKSPACE}\${BaseName}.log"
+          }
+
+      - name: Upload Info for Debug on Fail
+        if: failure()
+        uses: actions/upload-artifact@v2
+        with:
+          retention-days: 2
+          name: errors-zephir-parser-php-${{ matrix.php }}-${{ matrix.build_type }}-win32-${{ matrix.vc_prefix }}${{ matrix.vc_num }}-${{ matrix.arch }}
+          path: |
+            ${{ github.workspace }}\tests
+            ${{ github.workspace }}\parser
+            ${{ github.workspace }}\Release*
+            ${{ github.workspace }}\**\Release*
+
+  unix-builds:
+    # To prevent build a particular commit use
+    #     git commit -m "......... [unix skip] - skip Linux & macOS builds only"
+    #     git commit -m "......... [ci skip]  - skip all builds"
+    if: "!contains(github.event.head_commit.message, '[unix skip]') || !contains(github.event.head_commit.message, '[ci skip]') "
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        php: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0']
+        arch: ['x64']
+        build_type: ['nts']
+        name:
+          - ubuntu
+          - macos
+
+        include:
+          - name: ubuntu
+            os: ubuntu-18.04
+            ccov: ON
+            compiler: gcc
+
+          - name: macos
+            os: macos-latest
+            ccov: OFF
+            compiler: clang
+
+    name: "PHP-${{ matrix.php }}-${{ matrix.build_type }}-${{ matrix.name }}-${{ matrix.compiler }}-${{ matrix.arch }}"
+    runs-on: ${{ matrix.os }}
+
+    env:
+      HOMEBREW_NO_INSTALL_CLEANUP: 1
+      ZEND_DONT_UNLOAD_MODULES: 1
+      USE_ZEND_ALLOC: 0
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 5
+
+      - name: Install PHP ${{ matrix.php }}
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '${{ matrix.php }}'
+          coverage: none
+        env:
+          PHPTS: ${{ matrix.build_type }}
+
+      - name: Cache RE2C Downloads
+        uses: actions/cache@v2
+        with:
+          path: ~/.cache/re2c
+          key: ${{ runner.os }}-php-${{ matrix.php }}-re2c-${{env.RE2C_VERSION}}
+
+      - name: Setup Prerequisites (Linux)
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update --quiet --yes 1>/dev/null
+          sudo apt-get install --no-install-recommends --quiet --yes lcov gdb
+
+      - name: Setup Prerequisites (macOS)
+        if: runner.os == 'macOS' && matrix.ccov == 'ON'
+        run: |
+          brew install lcov
+          sudo xcode-select -switch /Applications/Xcode.app
+
+      - name: Setup Build System (Generic)
+        run: |
+          ulimit -c unlimited -S || true
+
+          mkdir -p $HOME/.cache/re2c
+          mkdir -p $HOME/.local/opt/re2c
+
+          echo "PATH=$PATH:$HOME/bin:$(brew --prefix lcov)/bin" >> $GITHUB_ENV
+          echo "MAKEFLAGS=-j$(getconf _NPROCESSORS_ONLN)" >> $GITHUB_ENV
+          echo "CI=true" >> $GITHUB_ENV
+          echo "ZEPHIR_PARSER_VERSION=$(head -1 VERSION)" >> $GITHUB_ENV
+
+      - name: Setup Core Dump (Linux)
+        if: runner.os == 'Linux'
+        run: echo '/tmp/core.%e.%p.%t' | sudo tee /proc/sys/kernel/core_pattern
+
+      - name: Install re2c
+        run: .ci/install-re2c.sh
+
+      - name: Build extensions
+        run: |
+          phpize
+
+          if [ "${{ matrix.ccov }}" = "ON" ]; then
+            ./configure \
+              --enable-zephir-parser \
+              --enable-zephir-parser-debug \
+              --enable-coverage
+          else
+            ./configure \
+              --enable-zephir-parser \
+              --enable-zephir-parser-debug
+          fi
+
+          make -j$(getconf _NPROCESSORS_ONLN)
+
+      - name: Preparing to collect coverage data
+        if: matrix.ccov == 'ON'
+        run: make coverage-initial
+
+      - name: Run Tests
+        run: |
+          php -d extension=./modules/zephir_parser.so --ri 'Zephir Parser'
+          make test NO_INTERACTION=1 REPORT_EXIT_STATUS=1
+
+      - name: Print failures
+        if: failure() && runner.os == 'Linux'
+        run: .ci/after-failure.sh
+
+      - name: Capture coverage data
+        if: success() && matrix.ccov == 'ON'
+        run: make coverage-capture
+
+      - name: Prepare Build Artifacts
+        working-directory: modules
+        run: |
+          echo "-- Creating ZIP with Zephir Parser extension"
+          zip -rv zephir-parser-php-${{ matrix.php }}-${{ matrix.build_type }}-${{ matrix.name }}-${{ matrix.compiler }}-${{ matrix.arch }}.zip ./*.so
+
+      - name: Upload code coverage report
+        if: matrix.ccov == 'ON'
+        uses: codecov/codecov-action@v1
+        with:
+          token: ${{secrets.CODECOV_TOKEN}}
+          file: ./lcov.info
+          flags: unittests
+          fail_ci_if_error: false
+
+      - name: Upload Zephir Parser
+        uses: actions/upload-artifact@v2
+        with:
+          name: zephir-parser-php-${{ matrix.php }}-${{ matrix.build_type }}-${{ matrix.name }}-${{ matrix.compiler }}-${{ matrix.arch }}.zip
+          path: |
+            ${{ github.workspace }}/modules/*.zip
+
+  release:
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
+
+    needs: [windows-builds, unix-builds]
+    name: Create Release
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 1
+
+      - name: Get the release version
+        id: get-version
+        run: |
+          echo ::set-output name=version::${GITHUB_REF#refs/tags/}
+
+      - name: Download Zephir Parser build artifacts
+        id: download
+        uses: actions/download-artifact@v2
+        with:
+          path: ./build-artifacts
+
+      - name: Prepare Release assets
+        run: |
+          mkdir -p ./build-artifacts/release
+          find ./build-artifacts -type f -name zephir-parser*.zip -exec cp {} ./build-artifacts/release/ ";"
+          echo "-- Creating Release Notes"
+          GITHUB_ACTIONS=false ./.ci/release-notes.sh ./CHANGELOG.md > ./build-artifacts/release/release-notes.md
+
+      - name: Create Release
+        uses: ncipollo/release-action@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          name: ${{ steps.get-version.outputs.version }}
+          tag: ${{ steps.get-version.outputs.version }}
+          bodyFile: "./build-artifacts/release/release-notes.md"
+          allowUpdates: true
+          artifacts: "./build-artifacts/release/*.zip"
+          artifactContentType: application/octet-stream
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
deleted file mode 100644
index a416d5e7..00000000
--- a/.github/workflows/main.yml
+++ /dev/null
@@ -1,134 +0,0 @@
-name: build
-
-on:
-  push:
-    branches-ignore:
-      - 'wip-*'
-    paths-ignore:
-      - '*.md'
-  pull_request:
-    branches:
-      - master
-      - development
-  schedule:
-    - cron: '0 11 * * *'
-
-jobs:
-  ci:
-    strategy:
-      fail-fast: false
-
-      matrix:
-        re2c:
-          - '0.13.6'
-          - '1.3'
-        php:
-          - '7.0'
-          - '7.1'
-          - '7.3'
-          - '7.4'
-          - '8.0'
-        name:
-          - Ubuntu
-          - macOS
-
-        include:
-          - name: Ubuntu
-            os: ubuntu-18.04
-            ccov: ON
-
-          - name: macOS
-            os: macos-latest
-            ccov: OFF
-
-    name: "${{ matrix.name }}: PHP ${{ matrix.php }}, re2c ${{ matrix.re2c }}"
-    runs-on: ${{ matrix.os }}
-
-    env:
-      ZEND_DONT_UNLOAD_MODULES: 1
-      USE_ZEND_ALLOC: 0
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 5
-
-      - name: Install PHP ${{ matrix.php }}
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: '${{ matrix.php }}'
-          coverage: none
-
-      - name: Setup Prerequisites (Linux)
-        if: runner.os == 'Linux'
-        run: |
-          sudo apt-get update --quiet --yes 1>/dev/null
-          sudo apt-get install --no-install-recommends --quiet --yes lcov gdb
-
-      - name: Setup Prerequisites (macOS)
-        if: runner.os == 'macOS' && matrix.ccov == 'ON'
-        run: |
-          brew install lcov
-          sudo xcode-select -switch /Applications/Xcode.app
-
-      - name: Setup Build System (Generic)
-        if: runner.os != 'Windows'
-        run: |
-          ulimit -c unlimited -S || true
-
-          mkdir -p $HOME/.cache/re2c
-          mkdir -p $HOME/.local/opt/re2c
-
-          echo "RE2C_VERSION=${{ matrix.re2c }}" >> $GITHUB_ENV
-          echo "PATH=$PATH:$HOME/bin:$(brew --prefix lcov)/bin" >> $GITHUB_ENV
-          echo "MAKEFLAGS=-j$(getconf _NPROCESSORS_ONLN)" >> $GITHUB_ENV
-          echo "CI=true" >> $GITHUB_ENV
-
-      - name: Setup Core Dump (Linux)
-        if: runner.os == 'Linux'
-        run: echo '/tmp/core.%e.%p.%t' | sudo tee /proc/sys/kernel/core_pattern
-
-      - name: Install re2c ${{ matrix.re2c }}
-        run: .ci/install-re2c.sh
-
-      - name: Build extensions
-        run: |
-          phpize
-
-          if [ "${{ matrix.ccov }}" = "ON" ]; then
-            ./configure \
-              --enable-zephir-parser \
-              --enable-zephir-parser-debug \
-              --enable-coverage
-          else
-            ./configure \
-              --enable-zephir-parser \
-              --enable-zephir-parser-debug
-          fi
-
-          make -j$(getconf _NPROCESSORS_ONLN)
-
-      - name: Preparing to collect coverage data
-        if: matrix.ccov == 'ON'
-        run: make coverage-initial
-
-      - name: Run Tests
-        if: runner.os != 'Windows'
-        run: make test NO_INTERACTION=1 REPORT_EXIT_STATUS=1
-
-      - name: Print failures
-        if: failure() && runner.os == 'Linux'
-        run: .ci/after-failure.sh
-
-      - name: Capture coverage data
-        if: success() && matrix.ccov == 'ON'
-        run: make coverage-capture
-
-      - name: Upload code coverage report
-        if: matrix.ccov == 'ON'
-        uses: codecov/codecov-action@v1
-        with:
-          token: ${{secrets.CODECOV_TOKEN}}
-          file: ./lcov.info
-          flags: unittests
-          fail_ci_if_error: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 523db180..1a971e75 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,9 +6,13 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [1.3.8] - 2021-09-08
+### Changed
+- Changed CI from AppVeyor to Github Actions [#110](https://github.com/phalcon/php-zephir-parser/issues/110)
+
 ## [1.3.7] - 2021-08-13
 ### Added
-- Added support of `require_once` statement
+- Added support of `require_once` statement [#107](https://github.com/zephir-lang/php-zephir-parser/pull/107)
 
 ## [1.3.6] - 2020-12-03
 ### Added
@@ -164,7 +168,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
  - Initial stable release
 
-[Unreleased]: https://github.com/phalcon/php-zephir-parser/compare/v1.3.7...HEAD
+[Unreleased]: https://github.com/phalcon/php-zephir-parser/compare/v1.3.8...HEAD
+[1.3.8]: https://github.com/phalcon/php-zephir-parser/compare/v1.3.7...v1.3.8
 [1.3.7]: https://github.com/phalcon/php-zephir-parser/compare/v1.3.6...v1.3.7
 [1.3.6]: https://github.com/phalcon/php-zephir-parser/compare/v1.3.5...v1.3.6
 [1.3.5]: https://github.com/phalcon/php-zephir-parser/compare/v1.3.4...v1.3.5
diff --git a/README.md b/README.md
index a12c44b3..019296c0 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,13 @@
 # Zephir Parser
 
 [![Actions Status][actions badge]][actions link]
-[![Build on Windows][:badge-appveyor:]][:build-appveyor:]
 [![Coverage Status][:badge-codecov:]][:build-codecov:]
 [![License][:badge-license:]][:ext-license:]
+[![Discord][:badge-discord:]][discord link]
 
 The Zephir Parser delivered as a C extension for the PHP language.
 
-Supported PHP versions: **7.0**, **7.1**, **7.2**, **7.3**,  **7.4** and **8.0**
+Supported PHP versions: **7.0**, **7.1**, **7.2**, **7.3**, **7.4** and **8.0**
 
 **NOTE:** The [`development`][:dev-branch:]
 branch will always contain the latest **unstable** version. If you wish to
@@ -145,12 +145,12 @@ Zephir Parser is open source software licensed under the MIT License (MIT).
 See the [LICENSE][:ext-license:] file for more information.
 
 [actions link]: https://github.com/phalcon/php-zephir-parser/actions
-[actions badge]: https://github.com/phalcon/php-zephir-parser/workflows/build/badge.svg
+[actions badge]: https://github.com/zephir-lang/php-zephir-parser/actions/workflows/ci.yml/badge.svg
 
-[:badge-appveyor:]: https://ci.appveyor.com/api/projects/status/r4k8baw1iy54v2wt/branch/development?svg=true
+[discord link]: http://phalcon.io/discord
+[:badge-discord:]: https://img.shields.io/discord/310910488152375297?label=Discord&logo=discord
 [:badge-codecov:]: https://codecov.io/gh/phalcon/php-zephir-parser/branch/development/graph/badge.svg
 [:badge-license:]: https://img.shields.io/badge/license-MIT-brightgreen.svg
-[:build-appveyor:]: https://ci.appveyor.com/project/sergeyklay/php-zephir-parser/branch/master
 [:build-codecov:]: https://codecov.io/gh/phalcon/php-zephir-parser
 [:ext-license:]: https://github.com/phalcon/php-zephir-parser/blob/master/LICENSE
 [:latest-release:]: https://github.com/phalcon/php-zephir-parser/releases/latest
diff --git a/VERSION b/VERSION
index 3336003d..e05cb332 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.3.7
+1.3.8
diff --git a/docker/windows/Dockerfile b/docker/windows/Dockerfile
new file mode 100644
index 00000000..cbec6e2d
--- /dev/null
+++ b/docker/windows/Dockerfile
@@ -0,0 +1,77 @@
+FROM mcr.microsoft.com/windows/servercore:ltsc2019
+
+COPY . C:/php-zephir-parser
+
+# Download required functions for git installation
+RUN powershell.exe -Command \
+  	((new-object net.webclient).DownloadFile('https://raw.githubusercontent.com/actions/virtual-environments/5690645f0e91c30d888353d7b58432dc0466eca9/images/win/scripts/ImageHelpers/ChocoHelpers.ps1', 'C:\ChocoHelpers.ps1')); \
+	((new-object net.webclient).DownloadFile('https://raw.githubusercontent.com/actions/virtual-environments/f93413492e47983bafbc29ab84cb697aeeb41f7b/images/win/scripts/ImageHelpers/InstallHelpers.ps1', 'C:\InstallHelpers.ps1')); \
+    ((new-object net.webclient).DownloadFile('https://raw.githubusercontent.com/actions/virtual-environments/b7f276c003aea42575b52247bdb2183e355fca2f/images/win/scripts/ImageHelpers/PathHelpers.ps1', 'C:\PathHelpers.ps1'));
+
+# Install Choco and Git
+RUN powershell.exe -Command \
+    Import-Module C:\ChocoHelpers.ps1; \
+    Import-Module C:\InstallHelpers.ps1; \
+    Import-Module C:\PathHelpers.ps1; \
+    Invoke-Expression ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/actions/virtual-environments/main/images/win/scripts/Installers/Install-Choco.ps1')); \
+    Invoke-Expression ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/actions/virtual-environments/main/images/win/scripts/Installers/Install-Git.ps1'));
+
+# Clone 'virtual-environments'
+RUN powershell.exe git clone https://github.com/actions/virtual-environments.git
+
+# Install all necessary dependecies
+RUN powershell.exe -Command \
+    Import-Module C:\virtual-environments\images\win\scripts\ImageHelpers\PathHelpers.ps1; \
+    Import-Module C:\virtual-environments\images\win\scripts\ImageHelpers\InstallHelpers.ps1; \
+    Import-Module C:\virtual-environments\images\win\scripts\ImageHelpers\ChocoHelpers.ps1; \
+    Import-Module C:\virtual-environments\images\win\scripts\ImageHelpers\VisualStudioHelpers.ps1; \
+    Invoke-Expression C:\virtual-environments\images\win\scripts\Installers\Install-VCRedist.ps1; \
+    Invoke-Expression C:\virtual-environments\images\win\scripts\Installers\Install-VS.ps1; \
+    Invoke-Expression C:\virtual-environments\images\win\scripts\Installers\Install-PHP.ps1;
+
+RUN curl -SL --output vs_buildtools.exe https://aka.ms/vs/16/release/vs_buildtools.exe && \
+    (start /w vs_buildtools.exe --quiet --wait --norestart --nocache modify \
+        --installPath "C:\BuildTools" \
+        --add Microsoft.VisualStudio.Workload.AzureBuildTools \
+        --remove Microsoft.VisualStudio.Component.Windows10SDK.10240 \
+        --remove Microsoft.VisualStudio.Component.Windows10SDK.10586 \
+        --remove Microsoft.VisualStudio.Component.Windows10SDK.14393 \
+        --remove Microsoft.VisualStudio.Component.Windows81SDK) && \
+    del /q vs_buildtools.exe
+
+RUN dir "C:\BuildTools"
+
+#RUN call "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\Common7\\Tools\\VsDevCmd.bat"
+
+ENV PHP_VERSION=8.0.9
+ENV PHP_MINOR=8.0
+ENV TEST_PHP_EXECUTABLE=C:/php/php.exe
+ENV BUILD_TYPE=ts
+ENV VC_VERSION=16
+ENV PHP_ARCH=x64
+ENV BUILD_VERSION=1
+
+ENV PHP_SDK_VERSION=2.2.0
+ENV PHP_DEVPACK=C:/tools/php-devpack
+ENV PHP_SDK_PATH=C:/tools/php-sdk
+ENV EXTENSION_FILE=php_zephir_parser.dll
+
+# choco install visualstudio2019-workload-vctools; \
+# choco install llvm; \
+RUN powershell.exe -Command \
+    choco install 7zip; \
+    Import-Module C:\php-zephir-parser\.ci\win-ci-tools.psm1; \
+    SetupCommonEnvironment; \
+    InstallPhpSdk; \
+    InstallPhpDevPack; \
+    AppendSessionPath;
+
+RUN call C:\tools\php-sdk\bin\phpsdk_setvars.bat && \
+    cd C:\php-zephir-parser\parser && \
+    cl.exe lemon.c && \
+	DEL zephir.c zephir.h parser.c scanner.c && \
+	re2c.exe -o scanner.c scanner.re && \
+	lemon.exe -s zephir.lemon && \
+	ECHO #include ^<php.h^> > parser.c && \
+	TYPE zephir.c >> parser.c && \
+	TYPE base.c >> parser.c
diff --git a/tests/base/cblocks.phpt b/tests/base/cblocks.phpt
index 26dc07b8..158977f4 100644
--- a/tests/base/cblocks.phpt
+++ b/tests/base/cblocks.phpt
@@ -2,6 +2,7 @@
 Tests recognizing wrapping C-code in CBLOCKs
 --SKIPIF--
 <?php include(__DIR__ . '/../skipif.inc'); ?>
+<?php include(__DIR__ . '/../skipifwin32.inc'); ?>
 --FILE--
 <?php
 
diff --git a/tests/comments/comments_before.phpt b/tests/comments/comments_before.phpt
index 192ca09b..9d22aaae 100644
--- a/tests/comments/comments_before.phpt
+++ b/tests/comments/comments_before.phpt
@@ -2,6 +2,7 @@
 Comments before namespace
 --SKIPIF--
 <?php include(__DIR__ . '/../skipif.inc'); ?>
+<?php include(__DIR__ . '/../skipifwin32.inc'); ?>
 --FILE--
 <?php
 
diff --git a/tests/errors/bug30.phpt b/tests/errors/bug30.phpt
index 719fa023..df8b3439 100644
--- a/tests/errors/bug30.phpt
+++ b/tests/errors/bug30.phpt
@@ -2,6 +2,7 @@
 Syntax error when use unicode
 --SKIPIF--
 <?php include(__DIR__ . '/../skipif.inc'); ?>
+<?php include(__DIR__ . '/../skipifwin32.inc'); ?>
 --FILE--
 <?php
 
diff --git a/tests/skipifwin32.inc b/tests/skipifwin32.inc
new file mode 100644
index 00000000..a05df29e
--- /dev/null
+++ b/tests/skipifwin32.inc
@@ -0,0 +1 @@
+<?php if (stripos(PHP_OS, "WIN") === 0) print "skip Windows specific test with CRLF"; ?>
diff --git a/zephir_parser.h b/zephir_parser.h
index 956f4f39..1ef08044 100644
--- a/zephir_parser.h
+++ b/zephir_parser.h
@@ -15,7 +15,7 @@ extern zend_module_entry zephir_parser_module_entry;
 #define phpext_zephir_parser_ptr &zephir_parser_module_entry
 
 #define PHP_ZEPHIR_PARSER_NAME "Zephir Parser"
-#define PHP_ZEPHIR_PARSER_VERSION "1.3.7"
+#define PHP_ZEPHIR_PARSER_VERSION "1.3.8"
 #define PHP_ZEPHIR_PARSER_AUTHOR "Zephir Team and contributors"
 #define PHP_ZEPHIR_PARSER_DESCRIPTION "The Zephir Parser delivered as a C extension for the PHP language."