added clear method to enum attribute
stringTypeFromString needed to be static
added Add string node
added build array string node
added collaped executable node command, specContained util
fixed add string node's updateSpecializationLink
added collapseExecutableNodes command
added StringToInt, IntToString, BuildArray string, CollapedExecutableNode to builtins
added COllapsedExecutableNode, and fixing regex node
working on copyfiles to handle more input types
added setSpecialization to attribute python wrappers
fixed updateSpecializationLink to take python objects
added valueChanged signal to Enum attr ui