First pass at a serializable graph
Stuff in the Script editor is now movable
Multiple nodes can now be spwned
Filename changes
Cleaned up SerializedGraph structure, fixed some bugs
SerializableGraph nodes can now be connected
Multiple types of nodes are now supported
Nodes can now be deleted and Parameters now exist (not yet editable)
Script graph parameters now work; serialized node data now protected
Ports are now restricted to connect only where it makes sense; bug fixes
Scripts now work in play mode (v1 complete)