adding tests for new depgraph
merged out
tweaking
testing
added full_subgraph
merged out from ken
fixed is_attr_node
starting integration
interim commit, added some disconnect tests
added test for component_graph()
interim
adding some external nodes to depgraph test
updated connections_to
fixed find_all_connecting
interim, lots of test failures
fixing tests
going back to putting all constraint/objective pseudos in Assembly depgraph.
interim
Fix go-openmdao.py --relocatable
interim