Started implementing d3

Nothing much yet, creating “g” elements in the svg for each qubit
Towards multiple sub-tags
Inner circle sizing works
Basic structure working
Arrange function in
Arrange mostly implemented
Working fully with editor
Working on buttons

need to track secondary number to revert to when newly computed state
set is smaller than previous
inc() and dec() working properly
Merge pull request #10 from omriBernstein/d3

D3