Import source
Working scopes
Add scope tests
Macros expand as scopes, so now work
origin, data, ascii improvements
Some renaming
65c02 support, arg parsing, better macro expansion, etc.
Usage message, precedence fixes
Start of contexts support, etc.
Allocator half-written
Auto zp allocation almost working, but cube test still buggered.
Kind of working, with ugly added .interf directive.
Add .protect directive.
Cube, visibility
Solid cube, one-buffer prototype rendering
Cube spins. Literal rough edges.
smoother edges
fix some rendering glitches.
almost no rendering artifacts, but some remaining weirdness.
More arithmetics, etc.