Rename ROM tileset module.
Prep for tileset data loading.
Create palette module.
Read and parse palette data.
Use test palette offset.
Tileset will contain palettes.
Tileset requires palette.
Fix module path.
Map requires tileset.
Fix comment accuracy.
Add byte detail to comments.
Extract tileset offsets from map footer.
Create instance of RomTilset when map is loaded.
Prep for reading tileset header.
Read tileset header.
Don't use non-useful keyword 'this' in such a case.