ci: build source distribution on appveyor. close #82 (#83)

Author: whtsky

appveyor.yml

@@ -12,12 +12,12 @@ init:
   - ps: "ls C:/Python*"
 
 install:
-  - SET PATH=%PYTHON%;%PYTHON%\scripts;%PATH%
   - echo "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64 > "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64\vcvars64.bat"
   - pip install -r dev-requirements.txt
 
 build_script:
   - python -m pip install -U pip setuptools
+  - python setup.py sdist
   - pip install cibuildwheel==1.0.0
   - cibuildwheel --output-dir wheelhouse
 
@@ -32,7 +32,9 @@ deploy_script:
           $env:Path += ";C:\Python37;C:\Python37\scripts"
           pip install twine
           twine upload --username whtsky --password $env:PYPI_PASSWD wheelhouse/bencoder*.whl
+          twine upload --username whtsky --password $env:PYPI_PASSWD dist/bencoder*
       }
 
 artifacts:
   - path: wheelhouse/bencoder*.whl
+  - path: dist/bencoder*