Started writing tests that the callback is being called.
Added Macros to allow me to shim anonymous classes into c.

There's gotta be a better way to do this, but #yolo...
Added currently failing test to motivate myself to work.
Updated the testutil header to work.

TODO: why didn't the prev one work?
Added basic tests for callback evaluation.
Ignore dSYM file(s)
Cleaned up some formatting in accel_test