fix window not being fullscreen when Config('graphics', 'fullscreen') is set to auto
Merge branch 'master' of github.com:kivy/kivy

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Merge branch 'master' of github.com:hansent/kivy
Merge branch 'master' of github.com:kivy/kivy
Merge branch 'master' of github.com:kivy/kivy
Merge branch 'master' of github.com:kivy/kivy
Merge pull request #828 from kived/master

Fix descriptor error from getattr in EventDispatcher
Example:KivyCatalog make call to change_kv on ctrl+s use absolute path
instead of relaive. Make error handeling consistent
ios: avoid cython check for ios platform, we are using it externally anyway.
Merge branch 'master' of ssh://github.com/kivy/kivy
setup: avoid cython for android/ios build, and ensure build_ext is imported
Changed arguments checking in ListView to account for possible use of kv in the definition of a ListView. Added several new examples and tests, and new entries in ListView docs. Also deleted ObserverView, which is not used anywhere. The pre-commit hook was not allowing this commit, because a file was deleted and the style check failed to find it. So, modified the pre-commit hook to use a different method to find staged files.
Added comment about a possible way to filter staged files for style checking.
uix:Bubble introduce a `limit_to` property
uix:bubble add versionadded info for `limit_to`
faq: extend the pygame parachute crash for devs
custom vertex format.  using VertexFormat class, the attributes of vertices used in fbo can be configured.
Mesh vertex instruction has new property / kwarg fmt to specify vertex format for the mesh data.
transformations, add additional matrix functions usefull for 3D graphics.
new functions: transpose, pserspective, and look_at
also fixed view_clip for when perspective = 1
Doc:Splitter: fix spellings
fixes in the event page in guide2