Fix some PEP8/Pylint/Isort stuff
Use Menu as a context manager
There are no longer any disabled teams
Use the format() builtin when assembling strings
Make Menu._end_directory() private
Call Menu.add_item() with a dict instead of kwargs
Use JSON for parameters instead of URL parameters
Better handling of thumbnails and fanarts and their paths
Minor cleanup in Menu class
Switched to requests instead of urllib(2)