* update icons
* add background loading of sound sequences
- fix bug with preFunction
- remove most of the old preloading code
* update spritesheets for karate man, marching orders
* file explorer chart loading
* update icon for trick on the class
* improve performance with new render settings
- fix letterboxing losing camera references
* fin in missing params?
needs testing
* finish default param check
* scale jump animation of fan club spectators
* fix missing references in a karate man method
* more liberal use of Double in conductor
beatkeeping is now absolute instead of being additive
* optimize Conductor more
reduce caching from constantly sorting tempo changes despite game manager doing it for us
moved metronome logic to LateUpdate
* Textboxes: setup prefab
* Textboxes: basic functionality finished
* Textbox: scaling
* Textbox: open captions
* Textbox: res edits
* Textbox: song artist
* Textbox: closed captions
* Textbox: fix not being able to use multiple text events
* I/O: save / load remixes using UTF-8 encoding
* Textboxes: stop editor shortcuts while typing
