pep8 fixes for kivy/effects/*
pep8 fixes for kivy/network/urlrequest.py
pep8 fixes for kivy/input/providers/hidinput.py
pep8 fixes for kivy/core/__init__.py
pep8 fixes for kivy/core/text/__init__.py
pep8 fixes for kivy/core/text/markup.py
pep8 fixes for kivy/core/text/text_*.py
pep8 fixes for kivy/core/camera/*
pep8 fixes for kivy/core/video/*