Revert version back to 0.9.1

Last PR inadvertantly changed the version back to 0.8.6.

Author: teharris1

setup.py

@@ -14,7 +14,7 @@
 
 setup(
     name='insteonplm',
-    version='0.8.6',
+    version='0.9.1',
     author='David McNett',
     author_email='[email protected]',
     url='https://github.com/nugget/python-insteonplm',