moving clusters of straight lines
WIP, bad commit... too big
super awesome caching reduces calls to createTubes to 3%!!
Edge has now array of coords, not only sourcecoord and targetcoord
orthogonal overlength edges
Merge branch 'master' of github.com:Rajikarubijua/bushumappu
keep of central node during optimization
tranisition effect again, transitionTime 2 s