Finished first two parts of expand-whens pass. Fixed inits by adding WRegInit and removing Null and initialize-register pass

Finished expand accessors pass. Fixed bug in resolve-gender. Added tests, all pass. Minimal removal of letrec to get WritePort to work correctly - a more thorough removeal is still needed

This reverts commit cce4364f.

Added debug print statements to dump fields from nodes, and updated tests to call firrtl correctly to enable/disable them

Rewrote README to include installation instructions and stanza justification. Added response to feedback, locatd in notes/feedbackQA*. Use two different mains, one for testing and one for deployment (make build vs make build-deploy).

allows the compiler to print after each pass to ease debugging

with a new IR construct - Null. LetRec is not implemented, but is
marked with a TODO.

Test cases for this pass are now located in
test/passes/initialize-register

Updated notes and TODO list, and started basic stanza-cheatsheet.

Changed package names from chipper to firrtl

Added stanza as a .zip, changed names from ch to firrtl, and spec.tex is
included. need to add installation instructions. TODO's included in
README