fix version tags

Author: dessant

kivy/__init__.py

@@ -141,7 +141,7 @@ def get_includes():
     modules with Kivy as a dependency. Currently returns the location of the
     kivy.graphics module.
 
-    .. versionadded:: 1.9.2
+    .. versionadded:: 1.9.1
     '''
     root_dir = dirname(__file__)
     return [join(root_dir, 'graphics'), join(root_dir, 'tools', 'gles_compat')]

kivy/uix/behaviors/button.py

@@ -114,7 +114,7 @@ class ButtonBehavior(object):
 
     .. versionadded:: 1.9.0
 
-    .. versionchanged:: 1.9.2
+    .. versionchanged:: 2.0.0
         The default value is now False.
 
     :attr:`always_release` is a :class:`~kivy.properties.BooleanProperty` and