- New console command music_jump: Jump to given order in music,
like Unreal's music change. Only for module (tracker) music.
- stream layer: Store the loop setting.
- umx reader: Replaced questionable byte-swap.
- libxmp backend: Handled the loop setting through libxmp apis.
- mikmod backend: Enabled in-module loops. Respect global loop
setting. More compatible reader callback structure.