~rabbits/uxnfor

Improved test file
Improved examples
Macro defs join brackets
Improving macros support
Added macros to example
Increased long-block size
Break sublabel blocks
Added new failing pattern
Write result file in one shot
Moved bottleneck
Rewind on ws and tabs
Do not break before block
Always add space after lambda
Added brk to jmp opcodes
Better handling of mem pages padding
Improved handling commented lines after definition
Removed extra spacing after block
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