gui initial commit
drawing board initial commit
able to drag items on drawing board
added connector pieces, not able to connect just yet, time to clean up
some drawing_board.py cleanup
first pass at wires between components and deleting items
major refactor, no content change
wires move when drawables are dragged
more sample drawables
mark illegal wires
start refactor: better organization
cleaned up components.py
cleaned up util.py
cleaned up example.py
cleaned up board.py