Unexpected behavior / crashes; to be fixed ASAP!

This affects the documentation (web-specific issues go to rgbds-www)

Typically new features; lesser priority than bugs

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This isn't related to the tools directly: repo organization, maintainership...

This PR is intended to clean up code more than change functionality

This affects RGBASM

This affects RGBFIX

This affects RGBGFX

This affects RGBLINK

This affects the test suite