Add Python 3.5 to Appveyor.

appveyor.yml

@@ -44,6 +44,14 @@ environment:
       PYTHON_VERSION: "3.4"
       PYTHON_ARCH:    "64"
 
+    - PYTHON:         "C:\\Python35"
+      PYTHON_VERSION: "3.5"
+      PYTHON_ARCH:    "32"
+
+    - PYTHON:         "C:\\Python35-x64"
+      PYTHON_VERSION: "3.5"
+      PYTHON_ARCH:    "64"
+
 install:
   - "%PIP% install wheel twine"