New instruction for Harmonica warp control.
Don't use qsim.
Beginnings of ipdom support.
Fully-functioning spawn and join instructions.
Documented split and join.
Implemented unimplemented instructions.
Merge branch 'harmonica-iset' of https://github.com/cdkersey/harptool into harmonica-iset
Merged in harp-iset and fixed instruction support.