rebase over gh302, remove appveyor temporarily

.appveyor.yml

-environment:
-  global:
-    REPO_DIR: python-appveyor-demo
-    PACKAGE_NAME: python_appveyor_demo
-    BUILD_COMMIT: master
-    BUILD_DEPENDS: "cython"
-    TEST_DEPENDS: "nose"
 
-  matrix:
-    - PYTHON: "C:\\Miniconda"
-      PYTHON_VERSION: "2.7"
-      PYTHON_ARCH: "32"
-    - PYTHON: "C:\\Miniconda-x64"
-      PYTHON_VERSION: "2.7"
-      PYTHON_ARCH: "64"
-    - 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 TARGET_ARCH variable.
-platform:
-    - x64
-
-matrix:
-    fast_finish: true
-
-install:
-    # Install miniconda and fix headers
-    - 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)"
-
-    # clone a origsel/python-appveyor-demo
-    # this repo includes a simple package to test appveyor
-    - git clone git://github.com/ogrisel/python-appveyor-demo.git
-
-build_script:
-    # Install build requirements
-    - conda install --yes %BUILD_DEPENDS%
-
-    # build wheel:
-    - cd %REPO_DIR%
-    - git checkout %BUILD_COMMIT%
-    - python setup.py bdist_wheel
-    - ls dist/*
-
-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%
-
-    # run tests from install wheel
-    - cd ..
-    - python -m pyappveyordemo.tests.test_extension
-
-    # Smoke test of install_python script
-    # Use C:\PythonXY, C:\PythonXY-x64, C:\PythonXYrcZ, or C:\PythonXYrcZ-x64
-    - set PYTHON=C:\Python37
-    - ps: .\install_python.ps1
-    - set PYTHON=C:\Python37-x64
-    - ps: .\install_python.ps1
-    - set PYTHON=C:\Python38-x64
-    - ps: .\install_python.ps1
-    - set PYTHON=C:\Python38rc1-x64
-    - ps: .\install_python.ps1
-    - set PYTHON=C:\Python38
-    - ps: .\install_python.ps1
-    - set PYTHON=C:\Python38rc1
-    - ps: .\install_python.ps1