diff --git a/.travis.yml b/.travis.yml.back
similarity index 100%
rename from .travis.yml
rename to .travis.yml.back
diff --git a/appveyor.yml.back b/appveyor.yml.back
new file mode 100644
index 0000000..d40159d
--- /dev/null
+++ b/appveyor.yml.back
@@ -0,0 +1,92 @@
+environment:
+  global:
+    REPO_DIR: pandas
+    PACKAGE_NAME: pandas
+    BUILD_COMMIT: v1.0.0
+    BUILDWHEEL: "True"
+    BUILD_DEPENDS: "hdf5 numpy>=1.9.3 numexpr>=2.6.2 six cython bzip2"
+    TEST_DEPENDS: "numpy>=1.9.3 numexpr>=2.6.2 six>=1.9.0 mock"
+    DISABLE_AVX2: "True"  # do not include AVX2 in this build
+    WHEELHOUSE_UPLOADER_USERNAME: travis-worker
+    WHEELHOUSE_UPLOADER_SECRET:
+        secure:
+            9s0gdDGnNnTt7hvyNpn0/ZzOMGPdwPp2SewFTfGzYk7uI+rdAN9rFq2D1gAP4NQh
+
+  matrix:
+    - PYTHON: "C:\\Miniconda35"
+      PYTHON_VERSION: "3.5"
+      PYTHON_ARCH: "32"
+    - PYTHON: "C:\\Miniconda35-x64"
+      PYTHON_VERSION: "3.5"
+      PYTHON_ARCH: "64"
+    - PYTHON: "C:\\Miniconda36"
+      PYTHON_VERSION: "3.6"
+      PYTHON_ARCH: "32"
+    - PYTHON: "C:\\Miniconda36-x64"
+      PYTHON_VERSION: "3.6"
+      PYTHON_ARCH: "64"
+    - PYTHON: "C:\\Miniconda37"
+      PYTHON_VERSION: "3.7"
+      PYTHON_ARCH: "32"
+    - PYTHON: "C:\\Miniconda37-x64"
+      PYTHON_VERSION: "3.7"
+      PYTHON_ARCH: "64"
+
+
+# We always use a 64-bit machine, but can build x86 distributions
+# with the PYTHON_ARCH variable.
+platform:
+    - x64
+
+matrix:
+    fast_finish: true
+
+install:
+    # Fetch submodules
+    - git submodule update --init --recursive
+
+    - SET PATH=%PYTHON%;%PYTHON%\Scripts;%PYTHON%\Library\bin;%PATH%
+    - conda info
+
+    # Check that we have the expected version and architecture for Python
+    - python --version
+    - python -c "import struct; print(struct.calcsize('P') * 8)"
+
+build_script:
+    # Install build requirements
+    - conda create --yes -n build_env python=%PYTHON_VERSION% %BUILD_DEPENDS%
+    - activate build_env
+
+    # FIXME update Cython for python 3.5
+    - pip install -U cython
+
+    # Additional pre install steps:
+    - set BZIP2_DIR=%CONDA_PREFIX%\Library\
+
+    # build wheel:
+    - cd %REPO_DIR%
+    - git checkout %BUILD_COMMIT%
+    - python setup.py bdist_wheel
+
+test_script:
+    # create test env
+    - conda create --yes -n test_env python=%PYTHON_VERSION% %TEST_DEPENDS%
+    - activate test_env
+
+    # install from wheel
+    - pip install --no-index --find-links dist/ %PACKAGE_NAME%
+
+    - cd ..
+    - python -m tables.tests.test_all
+
+artifacts:
+    - path: "%REPO_DIR%\\dist\\*"
+
+on_success:
+  # Upload the generated wheel package to Rackspace
+  # On Windows, Apache Libcloud cannot find a standard CA cert bundle so we
+  # disable the ssl checks.
+  - cd %REPO_DIR%
+  - pip install wheelhouse-uploader
+  - python -m wheelhouse_uploader upload
+    --no-ssl-check --local-folder=dist --no-update-index wheels
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
new file mode 100644
index 0000000..597b7b7
--- /dev/null
+++ b/azure-pipelines.yml
@@ -0,0 +1,86 @@
+schedules:
+- cron: "27 3 */1 * *"
+  # 3:27am UTC everyday
+  displayName: Nighthly build
+  branches:
+    include:
+    - master
+  always: true
+
+jobs:
+  - template: azure/windows.yml
+    parameters:
+      name: windows
+      vmImage: vs2017-win2016
+      matrix:
+        py_3.6_32:
+          PYTHON_VERSION: "3.6.x"
+          PYTHON_ARCH: "x86"
+          NP_BUILD_DEP: "1.13.3"
+        py_3.6_64:
+          PYTHON_VERSION: "3.6.x"
+          NP_BUILD_DEP: "1.13.3"
+        py_3.7_32:
+          PYTHON_VERSION: "3.7.x"
+          PYTHON_ARCH: "x86"
+          NP_BUILD_DEP: "1.14.5"
+          NIGHTLY_BUILD: "true"
+        py_3.7_64:
+          PYTHON_VERSION: "3.7.x"
+          NP_BUILD_DEP: "1.14.5"
+          NIGHTLY_BUILD: "true"
+        py_3.8_32:
+          PYTHON_VERSION: "3.8.x"
+          PYTHON_ARCH: "x86"
+          NP_BUILD_DEP: "1.17.3"
+          NIGHTLY_BUILD: "true"
+        py_3.8_64:
+          PYTHON_VERSION: "3.8.x"
+          NP_BUILD_DEP: "1.17.3"
+          NIGHTLY_BUILD: "true"
+
+  - template: azure/posix.yml
+    parameters:
+      name: linux
+      vmImage: ubuntu-16.04
+      matrix:
+        py_3.6_32:
+          MB_PYTHON_VERSION: "3.6"
+          PLAT: "i686"
+        py_3.6_64:
+          MB_PYTHON_VERSION: "3.6"
+        py_3.7_32:
+          MB_PYTHON_VERSION: "3.7"
+          PLAT: "i686"
+          NP_BUILD_DEP: "numpy==1.14.5"
+          NIGHTLY_BUILD: "true"
+        py_3.7_64:
+          MB_PYTHON_VERSION: "3.7"
+          NP_BUILD_DEP: "numpy==1.14.5"
+          NIGHTLY_BUILD: "true"
+        py_3.8_32:
+          MB_PYTHON_VERSION: "3.8"
+          PLAT: "i686"
+          NP_BUILD_DEP: "numpy==1.17.3"
+          NIGHTLY_BUILD: "true"
+        py_3.8_64:
+          MB_PYTHON_VERSION: "3.8"
+          NP_BUILD_DEP: "numpy==1.17.3"
+          NIGHTLY_BUILD: "true"
+
+  - template: azure/posix.yml
+    parameters:
+      name: macOS
+      vmImage: macOS-10.14
+      matrix:
+        py_3.6_64:
+          MB_PYTHON_VERSION: "3.6"
+          NP_BUILD_DEP: "numpy==1.13.3"
+        py_3.7_64:
+          MB_PYTHON_VERSION: "3.7"
+          NP_BUILD_DEP: "numpy==1.14.5"
+          NIGHTLY_BUILD: "true"
+        py_3.8_64:
+          MB_PYTHON_VERSION: "3.8"
+          NP_BUILD_DEP: "numpy==1.17.3"
+          NIGHTLY_BUILD: "true"
diff --git a/azure/posix.yml b/azure/posix.yml
new file mode 100644
index 0000000..807f3f3
--- /dev/null
+++ b/azure/posix.yml
@@ -0,0 +1,129 @@
+parameters:
+  name: ""
+  vmImage: ""
+  matrix: []
+
+jobs:
+  - job: ${{ parameters.name }}
+    pool:
+      vmImage: ${{ parameters.vmImage }}
+    variables:
+      REPO_DIR: "pandas"
+      BUILD_COMMIT: "v1.0.2"
+      PLAT: "x86_64"
+      NP_BUILD_DEP: "numpy==1.13.3"
+      CYTHON_BUILD_DEP: "cython==0.29.13"
+      NIGHTLY_BUILD_COMMIT: "master"
+      NIGHTLY_BUILD: "false"
+      TEST_DEPENDS: "pytest pytest-xdist hypothesis"
+      JUNITXML: "test-data.xml"
+      TEST_DIR: "tmp_for_test"
+    strategy:
+      matrix:
+        ${{ insert }}: ${{ parameters.matrix }}
+
+    steps:
+      - checkout: self
+        submodules: true
+
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: $(MB_PYTHON_VERSION)
+        displayName: Set python version
+
+      - bash: |
+          set -e
+
+          SKIP_BUILD="false"
+          if [ "$BUILD_REASON" == "Schedule" ]; then
+            BUILD_COMMIT=$NIGHTLY_BUILD_COMMIT
+            if [ "$NIGHTLY_BUILD" != "true" ]; then
+              SKIP_BUILD="true"
+            fi
+          fi
+          echo "Building pandas@$BUILD_COMMIT"
+          echo "##vso[task.setvariable variable=BUILD_COMMIT]$BUILD_COMMIT"
+          echo "##vso[task.setvariable variable=SKIP_BUILD]$SKIP_BUILD"
+
+          # Platform variables used in multibuild scripts
+          if [ `uname` == 'Darwin' ]; then
+            echo "##vso[task.setvariable variable=TRAVIS_OS_NAME]osx"
+            echo "##vso[task.setvariable variable=MACOSX_DEPLOYMENT_TARGET]10.9"
+          else
+            echo "##vso[task.setvariable variable=TRAVIS_OS_NAME]linux"
+          fi
+
+          # Store original Python path to be able to create test_venv pointing
+          # to same Python version.
+          PYTHON_EXE=`which python`
+          echo "##vso[task.setvariable variable=PYTHON_EXE]$PYTHON_EXE"
+        displayName: Define build env variables
+
+      - bash: |
+          set -e
+          pip install virtualenv wheel
+          BUILD_DEPENDS="$NP_BUILD_DEP $CYTHON_BUILD_DEP"
+
+          source multibuild/common_utils.sh
+          source multibuild/travis_steps.sh
+          source extra_functions.sh
+
+          # Setup build dependencies
+          before_install
+
+          clean_code $REPO_DIR $BUILD_COMMIT
+          build_wheel $REPO_DIR $PLAT
+        displayName: Build wheel
+        condition: eq(variables['SKIP_BUILD'], 'false')
+
+      - bash: |
+          set -xe
+          source multibuild/common_utils.sh
+          source multibuild/travis_steps.sh
+          source extra_functions.sh
+          setup_test_venv
+          install_run $PLAT
+          teardown_test_venv
+        displayName: Install wheel and test
+        condition: eq(variables['SKIP_BUILD'], 'false')
+
+      - bash: |
+          echo "##vso[task.prependpath]$CONDA/bin"
+          sudo chown -R $USER $CONDA
+        displayName: Add conda to PATH
+        condition: and(succeeded(), eq(variables['SKIP_BUILD'], 'false'), ne(variables['Build.Reason'], 'PullRequest'))
+
+      - bash: conda install -q -y anaconda-client
+        displayName: Install anaconda-client
+        condition: and(succeeded(), eq(variables['SKIP_BUILD'], 'false'), ne(variables['Build.Reason'], 'PullRequest'))
+
+      - bash: |
+          set -e
+          if [ "$BUILD_REASON" == "Schedule" ]; then
+            ANACONDA_ORG="scipy-wheels-nightly"
+            TOKEN="$PANDAS_NIGHTLY_UPLOAD_TOKEN"
+          else
+            ANACONDA_ORG="multibuild-wheels-staging"
+            TOKEN="$PANDAS_STAGING_UPLOAD_TOKEN"
+          fi
+          if [ "$TOKEN" == "" ]; then
+            echo "##[warning] Could not find anaconda.org upload token in secret variables"
+          fi
+          echo "##vso[task.setvariable variable=TOKEN]$TOKEN"
+          echo "##vso[task.setvariable variable=ANACONDA_ORG]$ANACONDA_ORG"
+        displayName: Retrieve secret upload token
+        condition: and(succeeded(), eq(variables['SKIP_BUILD'], 'false'), ne(variables['Build.Reason'], 'PullRequest'))
+        env:
+          # Secret variables need to mapped to env variables explicitly:
+          PANDAS_NIGHTLY_UPLOAD_TOKEN: $(PANDAS_NIGHTLY_UPLOAD_TOKEN)
+          PANDAS_STAGING_UPLOAD_TOKEN: $(PANDAS_STAGING_UPLOAD_TOKEN)
+
+      - bash: |
+          set -e
+          # The --force option forces a replacement if the remote file already
+          # exists.
+          ls wheelhouse/*.whl
+          anaconda -t $TOKEN upload --force -u $ANACONDA_ORG wheelhouse/*.whl
+          echo "PyPI-style index: https://pypi.anaconda.org/$ANACONDA_ORG/simple"
+        displayName: Upload to anaconda.org (only if secret token is retrieved)
+        condition: ne(variables['TOKEN'], '')
diff --git a/azure/windows.yml b/azure/windows.yml
new file mode 100644
index 0000000..3e04d4f
--- /dev/null
+++ b/azure/windows.yml
@@ -0,0 +1,132 @@
+parameters:
+  name: ""
+  vmImage: ""
+  matrix: []
+
+jobs:
+  - job: ${{ parameters.name }}
+    pool:
+      vmImage: ${{ parameters.vmImage }}
+    variables:
+      BUILD_COMMIT: "v1.0.2"
+      NP_BUILD_DEP: "1.13.3"
+      CYTHON_BUILD_DEP: "0.29.13"
+      NIGHTLY_BUILD_COMMIT: "master"
+      NIGHTLY_BUILD: "false"
+      PYTHON_ARCH: "x64"
+      TEST_DEPENDS: "pytest pytest-xdist hypothesis"
+      JUNITXML: "test-data.xml"
+      TEST_DIR: '$(Agent.WorkFolder)/tmp_for_test'
+    strategy:
+      matrix:
+        ${{ insert }}: ${{ parameters.matrix }}
+    steps:
+      - checkout: self
+        submodules: true
+
+      - task: UsePythonVersion@0
+        inputs:
+          versionSpec: $(PYTHON_VERSION)
+          architecture: $(PYTHON_ARCH)
+        displayName: Set python version
+
+      - bash: |
+          set -e
+          echo PYTHON $PYTHON_VERSION $PYTHON_ARCH
+          echo Build Reason: $BUILD_REASON
+          python --version
+          python -c "import struct; print(struct.calcsize('P') * 8)"
+          pip --version
+        displayName: Check that we have the expected version and architecture for Python
+      - bash: |
+          set -e
+          SKIP_BUILD="false"
+          if [ "$BUILD_REASON" == "Schedule" ]; then
+            BUILD_COMMIT=$NIGHTLY_BUILD_COMMIT
+            if [ "$NIGHTLY_BUILD" != "true" ]; then
+              SKIP_BUILD="true"
+            fi
+          fi
+          echo "Building pandas@$BUILD_COMMIT"
+          echo "##vso[task.setvariable variable=BUILD_COMMIT]$BUILD_COMMIT"
+          echo "##vso[task.setvariable variable=SKIP_BUILD]$SKIP_BUILD"
+          # Store original Python path to be able to create test_venv pointing
+          # to same Python version.
+          PYTHON_EXE=`which python`
+          echo "##vso[task.setvariable variable=PYTHON_EXE]$PYTHON_EXE"
+        displayName: Define build env variables
+      - bash: |
+          set -e
+          cd pandas
+          git checkout $BUILD_COMMIT
+          git clean -fxd
+          git reset --hard
+        displayName: Checkout pandas commit
+        condition: eq(variables['SKIP_BUILD'], 'false')
+      - bash: |
+          set -e
+          pip install --timeout=60 numpy==$NP_BUILD_DEP
+          pip install --timeout=60 $TEST_DEPENDS Cython==$CYTHON_BUILD_DEP
+          pip install twine wheel
+          pushd pandas
+          python setup.py build
+          python setup.py bdist_wheel
+          ls dist
+          twine check dist/*
+          popd
+        displayName: Build wheel
+        condition: eq(variables['SKIP_BUILD'], 'false')
+      - bash: |
+          set -e
+          source extra_functions.sh
+          source config.sh
+          setup_test_venv
+          pip install pandas/dist/pandas-*.whl
+          run_tests
+          teardown_test_venv
+        displayName: Install wheel and test
+        condition: eq(variables['SKIP_BUILD'], 'false')
+      - task: PublishTestResults@2
+        inputs:
+          testResultsFiles: '$(TEST_DIR)/$(JUNITXML)'
+          testRunTitle: ${{ format('{0}-$(Agent.JobName)', parameters.name) }}
+        displayName: 'Publish Test Results'
+        condition: eq(variables['SKIP_BUILD'], 'false')
+
+      - bash: echo "##vso[task.prependpath]$CONDA/Scripts"
+        displayName: Add conda to PATH
+        condition: and(succeeded(), eq(variables['SKIP_BUILD'], 'false'), ne(variables['Build.Reason'], 'PullRequest'))
+
+      - bash: conda install -q -y anaconda-client
+        displayName: Install anaconda-client
+        condition: and(succeeded(), eq(variables['SKIP_BUILD'], 'false'), ne(variables['Build.Reason'], 'PullRequest'))
+
+      - bash: |
+          set -e
+          if [ "$BUILD_REASON" == "Schedule" ]; then
+            ANACONDA_ORG="scipy-wheels-nightly"
+            TOKEN="$PANDAS_NIGHTLY_UPLOAD_TOKEN"
+          else
+            ANACONDA_ORG="multibuild-wheels-staging"
+            TOKEN="$PANDAS_STAGING_UPLOAD_TOKEN"
+          fi
+          if [ "$TOKEN" == "" ]; then
+            echo "##[warning] Could not find anaconda.org upload token in secret variables"
+          fi
+          echo "##vso[task.setvariable variable=TOKEN]$TOKEN"
+          echo "##vso[task.setvariable variable=ANACONDA_ORG]$ANACONDA_ORG"
+        displayName: Retrieve secret upload token
+        condition: and(succeeded(), eq(variables['SKIP_BUILD'], 'false'), ne(variables['Build.Reason'], 'PullRequest'))
+        env:
+          # Secret variables need to mapped to env variables explicitly:
+          PANDAS_NIGHTLY_UPLOAD_TOKEN: $(PANDAS_NIGHTLY_UPLOAD_TOKEN)
+          PANDAS_STAGING_UPLOAD_TOKEN: $(PANDAS_STAGING_UPLOAD_TOKEN)
+      - bash: |
+          set -e
+          # The --force option forces a replacement if the remote file already
+          # exists.
+          ls pandas/dist/pandas-*.whl
+          anaconda -t $TOKEN upload --force -u $ANACONDA_ORG pandas/dist/pandas-*.whl
+          echo "PyPI-style index: https://pypi.anaconda.org/$ANACONDA_ORG/simple"
+        displayName: Upload to anaconda.org (only if secret token is retrieved)
+        condition: ne(variables['TOKEN'], '')
diff --git a/config.sh b/config.sh
index 625234f..675b7fd 100644
--- a/config.sh
+++ b/config.sh
@@ -25,6 +25,10 @@ function build_wheel {
 function run_tests {
     # Runs tests on installed distribution from an empty directory
     export PYTHONHASHSEED=$(python -c 'import random; print(random.randint(1, 4294967295))')
+    echo $PATH
+    which -a python
+    pip list
     python -c 'import pandas; pandas.show_versions()'
-    python -c 'import pandas; pandas.test(extra_args=["-m not clipboard", "--skip-slow", "--skip-network", "--skip-db", "-n=2"])'
+    # Skip test_maybe_promote_int_with_int: https://github.com/pandas-dev/pandas/issues/31856
+    python -c 'import pandas; pandas.test(extra_args=["-m not clipboard", "--skip-slow", "--skip-network", "--skip-db", "-n=2", "-k not test_maybe_promote_int_with_int"])'
 }
diff --git a/extra_functions.sh b/extra_functions.sh
new file mode 100644
index 0000000..6e5f1b6
--- /dev/null
+++ b/extra_functions.sh
@@ -0,0 +1,29 @@
+function setup_test_venv {
+    # Create a new empty venv dedicated to testing for non-Linux platforms. On
+    # Linux the tests are run in a Docker container.
+    if [ $(uname) != "Linux" ]; then
+        deactivate || echo ""
+        $PYTHON_EXE -m venv test_venv
+        if [ $(uname) == "Darwin" ]; then
+            source test_venv/bin/activate
+        else
+            source test_venv/Scripts/activate
+        fi
+        # Note: the idiom "python -m pip install ..." is necessary to upgrade
+        # pip itself on Windows. Otherwise one would get a permission error on
+        # pip.exe.
+        python -m pip install --upgrade pip wheel
+        if [ "$TEST_DEPENDS" != "" ]; then
+            pip install $TEST_DEPENDS
+        fi
+    fi
+}
+
+function teardown_test_venv {
+    if [ $(uname) != "Linux" ]; then
+        deactivate || echo ""
+        if [ $(uname) == "Darwin" ]; then
+            source venv/bin/activate
+        fi
+    fi
+} 
diff --git a/multibuild b/multibuild
index 217614c..47f4b24 160000
--- a/multibuild
+++ b/multibuild
@@ -1 +1 @@
-Subproject commit 217614c7bdc27ac8f5bb29dab0568594b8f4f352
+Subproject commit 47f4b247be212315313ff72e3daafdff0cbc6c33