change appveyor testing from python 3.4 to python 3.6 (#393)

* add python 3.5 and 3.6 to appveyor

* only py 3.6 on windows

* update whatsnew

Author: wholmgren

appveyor.yml

@@ -7,8 +7,7 @@ environment:
 
   matrix:
     - PYTHON_VERSION: "2.7"
-    - PYTHON_VERSION: "3.4"
-    #- PYTHON_VERSION: "3.5"
+    - PYTHON_VERSION: "3.6"
 
 platform:
     - x86
@@ -18,6 +17,8 @@ install:
     # Use the pre-installed Miniconda for the desired arch
     - ps: if($env:PYTHON_VERSION -eq '3.5')
             { $env:CONDA_PATH="$($env:CONDA_PATH)35" }
+    - ps: if($env:PYTHON_VERSION -eq '3.6')
+            { $env:CONDA_PATH="$($env:CONDA_PATH)36" }
     - ps: if($env:TARGET_ARCH -eq 'x64')
             { $env:CONDA_PATH="$($env:CONDA_PATH)-x64" }
     - ps: $env:path="$($env:CONDA_PATH);$($env:CONDA_PATH)\Scripts;$($env:CONDA_PATH)\Library\bin;C:\cygwin\bin;$($env:PATH)"

docs/sphinx/source/whatsnew/v0.5.2.rst

@@ -21,7 +21,7 @@ Documentation
 
 Testing
 ~~~~~~~
-*
+* Test Python 3.6 on Windows with Appveyor instead of 3.4. (:issue:`392`)
 
 Contributors
 ~~~~~~~~~~~~