fixed a bug in cyclicworkflow, but there is som refactoring that needs to be done there
don't need those spaces
almost forgot to add a test
Yet another fix to VariableTree copying...
Merge pull request #1739 from setowns1/bug

Yet another fix to VariableTree copying...
fixed invalidation problem with vartree input as src
updated test for vtinput as src invalidation issue
Merge pull request #1740 from naylor-b/insub_bug

bug: vtree input as src was being improperly invalidated when it had no upstream connection
Merge pull request #1738 from JustinSGray/dev

fixed a bug in cyclicworkflow
missed a test for swapped left/right sides of constraint
Merge pull request #1741 from JustinSGray/dev

missed a test for swapped left/right sides of constraint
Merge branch 'dev' into gui