* WIP
* Test no longer crashes, but emit trampoline is incomplete and skips pipeline phases
* Fix lints, use non-generator trampoline in emit (still skips pipeline)
* Final version with emitBinaryExprssion work stack that is only used if possible
* Fix lints
* retarget to es2015 for testing
* Use bespoke state machine trampolines in binder and checker
* Remove now extraneous code in parser
* Adjust fixupParentReferences to use a depth first preorder traversal rather than breadth first
* Reintroduce incremental fast bail in fixupParentReferences
* Revert target to es5
* PR feedback
* Small edit for devops rebuild with updated definition
* Fix comment nits, add internally extraneous check back into transformer
