rename: stereopanning x -> volume l, r
rename: unknownmusic0xee x -> stereopanning x
rename: replace note/dnote with pitch/drum
rename: togglecall -> toggleperfectpitch
rename: tempo x, y -> tempo (x * 256 + y)
Assume notes with no octave are octave 3

`pkmnhealed.asm` is the only place this occurs.

Closes #7
Merge pull request #8 from mtolly/rename

Rename music commands