Organization.
Array to set test.
Count test.
Removed debugging code.
Removed not within.
Relax restrictions on IrIntChannel test.
Add test case for joining on a super's string.
Remove unused code.
Fixed typing of sum.
Test typing of join.
Fixed typing of joinParent.
More typing tests.
Remove redundant function.
Reduce the number of hash collisions during coalescing.
Linear equation math.
Linear program optimizations.