Until now, many online textures were retrieved via the default texture store, which causes them to never be removed from GPU memory. It also has a performance overhead due to mipmap generation (which will be avoided via ppy/osu-framework#1885.
Closes #3098.
codefactor.io \(o.o)/ also one unnecessary semicolon
Results in incorrect default formatting.
Most issues were related to BeginLoopedSequence usage and lack of "this." in front of transform helpers.
Note that this will break rotation loops until https://github.com/ppy/osu-framework/issues/900 is addressed.