Updated to version 1.1:
Fixed: bug with "set collision layers" action.
Fixed: bug with "apply impulse" action.
Fixed/Added: more support for Chipmunk2d's object sleeping behavior
Fixed: Collision shape wasn't always aligned properly.
Added: expression to get the uid of the other object of a joint.
Added: action to sleep or wake up an object.
Cosmetic change: moved the actions in the "velocity" action group to the "dynamics" action group.
Here's example using segment shapes, collision layers and the "pick closest object" condition to do a sonic the hedgehog like loop.