use frame disposal info from pil. closes #2455
doc: more explanations in adapters/__init__.py
doc: reworded model explanation in adapter__init__.py
Pep8 80 cols on examples/widgets/lists/fixtures.py
doc: revisions to adapters/adapter.py
doc: expanded adapters/args_converters.py docs
imageio: add possibility to load image from a buffer, and make the loader GIL-free
imageio: remove debug
doc: added template to adapters diagram
Merge branch 'master' of https://github.com/kivy/kivy
doc: cropped image
doc: Fixed buildozer logcat instructions