works now
works now
Merge pull request #1621 from Kenneth-T-Moore/bench

Fix for case where requested inputs and outputs are missing their derivatives.
fix for assemblies in the metamodel's model slot
fix for assemblies in the metamodel's model slot
Merge pull request #1622 from Kenneth-T-Moore/bench

Metamodel fix for assemblies as models
Improved test coverage of derivatives code. Fixed _is_complex_stepable
Merge branch 'dev' of https://github.com/OpenMDAO/OpenMDAO-Framework into complex_step