Rename clear network to new network.
Add "New" to action bar. Need an icon. Closes #249.
Closes #124: Enable functionality of string ports in Read/WriteMatrix

As well as ReadMesh
Manhattan connections: case 1, input port below output.
Copy impl for connection in progress (refactor coming soon)
Manhattan pipes look pretty good.
Refactor away duplication. Closes #104
Start on OO Python interface: PyModule shell
Module list available in python
Module::setUIVisible
Can toggle UI from Python
Override Python's __getattr__/__setattr__ for module state variables

This is awesome, IMHO
Fix order of conversion.
Expose port/connection objects to Python
Can connect modules through Python
Connection operator improvement
Speed up ShowMesh by factor of a zillion.
Large network generated from Python.
Dialog push/pull
Macro out legacy thread code (does not build on Mac)