* test graph.

* rnn matrix fusion wip.

* WIP.

* matrix fused.

* clean up.

* additional refactor.

* fixed merge errors.

* testing.

* added test case.

* more testing.

* more testing.

* bias wip.

* debuggging.

* fusing bias too.

* disabled debug outputs.

* removed debugging.

* removed testing models.

* removed debug models.

* reset nbench.

* clean up and testing.

* removed debug code.

* updated comments and var names.

* rename var.

* removed debug code.

* removed debug code.

* fixed compiler warnings.

* refactored test.

* Added const to parameter.

* address some of the review comments.

* added comments and addressed reviews.