- code cleanup
- UserObjectSettingSelect#after_load should call super
- remove unused constants
- comment
- comment
- remove unused constants
- remove unused constants
- remove 'tag' concept from UserObjectSettingDirectors, UserObjectSettingActors, and UserObjectSettingThemes
- switch Variable from 'damper_method' setting None/Low/High to more explicit max_change_per_frame
- max_change_per_frame needn't use animation