merged out from dev
Merge pull request #1459 from Kenneth-T-Moore/hifi

Hifi
Merge pull request #1460 from Kenneth-T-Moore/hifi

cleaned up ffd stuff in pseudo-assys a bit
Merge branch 'newinvalidation' of github.com:naylor-b/OpenMDAO-Framework into newinvalidation
merged out from dev
forgot to fix a merge conflict
merged from hifi
forgot about a merge conflict
fixed a failing test and updated some comments in the new depgraph
Merge branch 'hifi' of github.com:Kenneth-T-Moore/OpenMDAO-Framework into hifi
derivative array bounds in depgraph
some changes
started vartrees test
some more tests
Merge pull request #5 from JustinSGray/hifi

Hifi
cleanup
Merge branch 'hifi' of github.com:Kenneth-T-Moore/OpenMDAO-Framework into hifi
Merge branch 'hifi' of https://github.com/OpenMDAO/OpenMDAO-Framework into hifi
broken things are fixed, but still broken
Merge branch 'hifi' of github.com:JustinSGray/OpenMDAO-Framework into hifi