851b0f6 - Pm_MessageStatusGen so I can make MIDI statuses more easily, plus typo fix.
447eca4 - Another convenience macro in midi.h, this time to set the tempo of a tempo meta.
520f27d - Fixes for multi-even metas.
e67ea61 - Fixed ReadUntil to not break with multiple events at the same time.
2696aef - Updated midifile.
3f03991 - Had note on and note off backwards.
316b1c8 - Putting Pm_MessageType and Pm_MessageChannel into midi.h too.
0945150 - Moving midi.h here, since it's generally useful.
7f4e8d2 - Clarifying a comment.
0939454 - Simplifying some parts of MIDI filestreams, generalizing others.