Add support for subsongs
UADE: update @info after changing subsongs
UADE: rename #channels method
Player test: rename #channels
Add Player#format method
GME wip
GME: expand extensions
gme: add metadata methods
GME: GmeInfoT strings as :string
GME: add support for subsongs
GME: add newline
Don't try to rescue bare LoadError
gme: fix song end detection
gme: implement #format