Auto merge of #2908 - micbou:appveyor-python-36, r=puremourning

[READY] Test for Python 3.6 on AppVeyor

We should always test for the latest version of Python on AppVeyor.

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appveyor.yml

@@ -4,12 +4,12 @@ environment:
   COVERAGE: true
   matrix:
   - arch: 32
-    python: 35
+    python: 36
   # We only test Python 2.7 on 64 bits.
   - arch: 64
     python: 27
   - arch: 64
-    python: 35
+    python: 36
 install:
   - ci\appveyor\appveyor_install.bat
 build_script: