changes to AssignmentClient architecture to fix fork behaviour
make sure STDOUT from child assignment-client bubbles up to parent
Merge pull request #1501 from birarda/qprocess

switch to QProcess instead of fork in AssignmentClient
Merge pull request #1502 from AndrewMeadows/master

more correct particle-particle collisions
Adding palm accessor method that fetches left or right, as specified.
Adding simple CollisionInfo class as data wrapper and a findSphereCollision() method to AgentData API.
Adding initial Agent::findSphereCollision() implementation and removing some debug log spam.
Minor cleanup: moved #include out of header and into cpp file.
Adding methods to Model for accessing hand info and computing hand collisions.
Adding findSphereDiskPenetration() method for hand paddle experiment.
First pass at particle-hand collisions using hacked hand capsules.