chore(ci): drop Travis and AppVeyor for GitHub Actions

Author: Kocal

.appveyor.yml

@@ -0,0 +1,53 @@
+name: Node CI
+
+on:
+    pull_request:
+        branches:
+            - '*'
+
+jobs:
+    ci:
+        runs-on: ${{ matrix.os }}
+
+        strategy:
+            matrix:
+                os: [ubuntu-latest]
+                node-version: [8.x, 10.x, 12.x, 14.x]
+                include:
+                    -   os: windows-latest
+                        node: 12
+
+        steps:
+            -   uses: actions/checkout@v1
+
+            -   name: Use Node.js ${{ matrix.node-version }}
+                uses: actions/setup-node@v1
+                with:
+                    node-version: ${{ matrix.node-version }}
+
+            -   name: Get yarn cache directory
+                id: yarn-cache
+                run: echo "::set-output name=dir::$(yarn cache dir)"
+
+            -   name: Restore yarn cache (if available)
+                uses: actions/cache@v1
+                with:
+                    path: ${{ steps.yarn-cache.outputs.dir }}
+                    key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+                    restore-keys: |
+                        ${{ runner.os }}-yarn-
+
+            -   run: yarn install --frozen-lockfile
+
+            -   run: |
+                    cd example
+                    yarn install --frozen-lockfile
+                    yarn docs
+                    yarn docs:docstrap
+                    yarn docs:minami
+                    yarn docs:tui
+                    cd ..
+
+            -   run: yarn lint
+
+            -   run: yarn test -i && npx codecov

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: Release
+
+on:
+    push:
+        branches:
+            - master
+
+jobs:
+    release:
+        runs-on: ubuntu-latest
+
+        steps:
+            -   uses: actions/checkout@v2
+
+            -   name: Install Node.js
+                uses: actions/setup-node@v1
+                with:
+                    node-version: 12.x
+
+            -   run: yarn install --frozen-lockfile
+
+            -   run: yarn semantic-release
+                env:
+                    NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+                    GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}