Merge pull request #7 from setowns1/bug

Array constraint support
updated location of pyipopt
pyopt_driver and many other drivers are triggering a run via get_eq_constraints before the workflow is executed. ID 65164180
Merge pull request #8 from hschilling/P65164180_pyopt_driver_eq_constraints

Fix for pyopt_driver and many other drivers are triggering a run via get_eq_constraints before the workflow is executed. ID 65164180
0.9.6 update
Update for new case apis