add and include paperjs v0.9.17
clone without adding to DOM

otherwise paper will rename the thing in question.
clipping workaround not needed anymore
Merge remote-tracking branch 'joscha/master' into update_paperjs
Merge remote-tracking branch 'joscha/master' into update_paperjs
we might have things selected that are not nodes
we removed the active-nodes property
fir for error on non-existing nodefunction
fix the ghosts.

thanks to @lehni (https://github.com/paperjs/paper.js/issues/447)
update to latest paperjs
remove old paperjs
Merge pull request #11 from joschabach/update_paperjs

Update paperjs, merging feature branch.
Reinstantiated node.activation to its former glory
Moved test for existence of world from general node function to the node function of the Actor
Requesting activation from a node no longer computes that activation (side effect)
Default node function calculates activation from slots, and calls gate functions with node activation
Setting node activation to gen
As node.activation is no longer a function of gate
activations, redraw checking has to be performed
on gate activation to catch all redraw conditions
Merge remote-tracking branch 'origin/master' into minecraft_integration