The header files are automatically generated during build. No need to #define anything; everything is fixed by the .asm file. This adds go as a dependency to run the unit tests, but this is probably not a bad thing, as go is probably needed anyway if one wants to actually start developing Sointu.
audio still a bit crackly; should probably decouple actual row ticking and rendering of audio (but how does that work with tempo ops?)
sequencer goroutine is a bit weird, too, should rethink
