Update appveyor.yml

drop support for python < 3.6
supports only PYTHON_ARCH: '64'

Author: demotu

appveyor.yml

@@ -14,29 +14,23 @@ environment:
     PIP_ONLY_BINARY: lxml
   matrix:
 
-    - TOXENV: 'py27-notebook'
-      TOXPYTHON: C:\Python27\python.exe
-      PYTHON_HOME: C:\Python27
-      PYTHON_VERSION: '2.7'
-      PYTHON_ARCH: '32'
-
-    - TOXENV: 'py36-notebook44'
+    - TOXENV: 'py36-notebook60'
       TOXPYTHON: C:\Python36\python.exe
       PYTHON_HOME: C:\Python36
       PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '32'
+      PYTHON_ARCH: '64'
 
-    - TOXENV: 'py36-notebook54'
+    - TOXENV: 'py37-notebook60'
       TOXPYTHON: C:\Python36\python.exe
-      PYTHON_HOME: C:\Python36
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '32'
+      PYTHON_HOME: C:\Python37
+      PYTHON_VERSION: '3.7'
+      PYTHON_ARCH: '64'
 
-    - TOXENV: 'py36-notebook55'
-      TOXPYTHON: C:\Python36\python.exe
-      PYTHON_HOME: C:\Python36
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '32'
+    - TOXENV: 'py38-notebook60'
+      TOXPYTHON: C:\Python38\python.exe
+      PYTHON_HOME: C:\Python38
+      PYTHON_VERSION: '3.8'
+      PYTHON_ARCH: '64'
 
 init:
   - ps: echo $env:TOXENV