cw4: Revamp assembly implementations
cw4: Rework test bench interrupt intervals
cw4: Update gtkwave view
cw4/util: Support binary literals
cw4: Fix macro regexp match pattern
cw4/stdlib: Refactors for clarity
cw4/assembler: Add lddi and stdi macro isntructions
cw4: Fixups and awesome sauce
cw4: Fixup list output
cw4: More assembly work
cw4: Optimise the fib SSD ISR