EntityItem::setSimulationState() now public
add EntitySimulation and SimpleEntitySimulation
EntitySimulation takes EntityItem* rather than ID
EntityServer gets a simuation
EntityCollisionSystem moves to interface

and interface connects EntityCollision system to EntityTree
EntityTreeHeadlessViewer gets a simulation
merge upstream/master into andrew/thermonuclear
add entities to simulation after unpacking
Merge branch 'master' of https://github.com/highfidelity/hifi
moving EntityCollisionSystem back to entities lib
OctreeServer::createTree() is now protected
merge upstream/master into andrew/thermonuclear
Fix selection shadow not updating when grid moves
Default 'Allow Select Large/Small Models' to true
Move entity selection to click event and add ability to deselect
Add selection boxes in multi-selection mode
Increase size of selection boxes
Move baseOfEntityProjectionOverlay update to updateHandles()
Update checkMove to only update rotation handles instead of all handles
Remove clearSelections from findClickedEntity - it shouldn't handle it