First Pass Simplification Complete
First Pass Simplification Complete

The first pass of the simplifier. It seems to do no harm at the moment,
although I'd like more test cases when we have more benchmarks. It also
still solves the program-b benchmark in a single iteration.

jackfirth/herbie,jackfirth/herbie,jackfirth/herbie,jackfirth/herbie,jackfirth/herbie,jackfirth/herbie