OpenMDAO/OpenMDAO-Framework — pull request #1693 by Kenneth-T-Moore (2014-04-01 19:03:41+00:00)
Title: Complex Step capability

1. User can now differentiate models with the Complex Step method by setting fd_form to "complex_step"

2. The Float trait now has support for bypassing the type validation when complex stepping.

3. The Array trait already supported complex step, but some cleanup was done.