Project history:

BROOD 5.x
- static name management: modules + lambda (no more hash tables)
- separation of rpn macro language and forth syntax (parsing words)
- base scat language: stack + hidden state threading
- macro laguage: 2stack = scat stack + assembly stack
- more macro / postponed-word unification (i.e. multi-exit macros)
- better target specialization: controlled redefine of core words
- simplified assembler + improved code data structure
- asm pattern matcher with static checking
- state rep: structure type inheritance + functional update (factory)

BROOD 4.x
- host language implemented as mzscheme macros (without interpreter)
- made most macros hygienic, including pattern + forth preprocessor.
- purification: eliminated some side effects
- added better state syntax + state combinators

BROOD 3.x
- switched to host language with static binding
- moved from implicit functional store -> explicit state binding (lifting)
- introduced pattern matching language for peephole optimizer

BROOD 2.x
- switched from forth to functional host language with dynamic binding
- uses functional store
- sheepsint 2.0 on 18f1220

BROOD 1.x (original BADNOP)
- imperative forth host language
- simple PIC specific
- sheepsint 1.0 on 12f675