TODO 
   Make stanza a git repo
   Write installation instructions for stanza
   Need 2 different prints, one with IR-internal information, and another that matches correct FIRRTL
   Figure out how types and widths propogate for all updated primops
   node not parsed for stmts

Tests:
   Error if declare anything other than module in circuit
   Error if incorrectly assign stuff, like use = instead of :=