~rabbits/orca-toy

A few tail-call opt
Optimized menu-drawing
Removed extra macros
Removed a few macros
Fixed issue with midi/velocity
Simplified block-comment
Added block comments
Improved test coverage
More housekeeping
Combined helpers
Optimized port helpers
Optimized meter
Returned the MOD/MOD2 macros
Use mfil to clear variables
Cache drawing position
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