added case recording
Fixed a bug with equality constraints
prevent error in callback from being swallowed by another error
Fix for integer parameters
Changes for new derivative API
Another fix for new api"
better debugging
Change for group params
Merge branch 'master' of github.com:OpenMDAO-Plugins/pyopt_driver into bug

Updated from ArrayParameter version that started from old master.

Conflicts:
	src/pyopt_driver/pyopt_driver.py
	src/pyopt_driver/test/test_pyopt_driver.py