map_editor: to_png got renamed
crystal: some new param classes and reword bittable1 -> event flag
preprocessor: rgbasm "EQUS" takes string literals
Merge pull request #65 from yenatch/rgbasm-equs

preprocessor: rgbasm "EQUS" takes string literals
sfx_names: 1St, 2Nd to 1st, 2nd
audio: Clean up output and fix sfx handling
sfx_names: UnknownCb to UnknownCB
audio: Crystal sfx are in a separate clump
audio: Distinguish between sound and noise commands

sound takes a word for frequency, and noise takes a byte
audio: Refactor output handling.

Drastically improves execution time.
audio: Include unreferenced cries in dump_crystal_cries output
audio: Use generate_label_asm instead of manually creating label asm
audio: rework sfx dumps and fix incbin insertion
audio: Dump an unknown sound effect
audio: parse channel branches independently instead of running past the end
audio: Add a comment to generate_crystal_sfx_pointers output
audio: Don't use underscores in base labels
crystal: unknownmusic0xdf -> togglesfx
labels: exported labels are labels too
audio: Docstrings for functions that didn't have any.