grammar labels and tuple values
simple top-level scope building from assignment exprs
code review fixes
checkstyle fixes
Merge pull request #150 from mtrberzi/tuples

Tuple values
Merge branch 'master' into scopebuilding
checkstyle tho
Merge pull request #153 from mtrberzi/scopebuilding

Scopebuilding
fixes to variable reference binding
"Unit" type -- the type of a value that holds no information
simple digital logic primitive injection
refactor: Unit -> Nil
Merge pull request #157 from mtrberzi/primitive-functions

Primitive functions
expression graph building
variable contraction and null edge elimination
Tests of Intermediate Exceptions and ArrayValue
Merge pull request #158 from TysonAndre/intermediate-coverage

Tests of Intermediate Exceptions and ArrayValue
simple one-wire code generation
Unit Test of main helper function, fixes

See if building primitives runs without crashing.

Sanity check on one of the primitive types.

Also fix subtype and equality logic for FunctionTypeValue and TupleTypeValue.
Merge pull request #160 from TysonAndre/front-coverage

Add coverage for front end, fix (tuple/function)Type comparison