* Getting closer to having ADT defs
* ADT defs working probly
* Match parsing basipally done
* came to earth in a silver chrome UFO
* match finished?
* All tests but newest are passing
* ADT constructors work
now cleanup?
* Cleanup round 1
* Cleanup round 2
* Cleanup round 3
* Cleanup round 4
* Cleanup round 6
* Cleanup round 7
* Lil grammar fix
* Remove ANTLR Java files
* Lint roller
* Lint roller
* Address feedback
* Test completeness in match test
* Remove unused imports
* Lint roller
* Switch to Rust-style ADT syntax
* Lil fix
* Add dummy `extern type` handler
* Add type arg to test
* Update prelude semantic version
* Repair test
* Fix graph var handling in match
* Revert 's/graph_equal/is_unifiable' change
