leftover box2d cleanup
pointsToConvexHull stable to fix #45
conversation and ui resize/reposition fixes
utilstile fix
creature tether to spawner now opt in
triggers always gather target sequence
tutorial text fix to match recent ui positioning change
particle sticky collision on slopes fix
added line of sight method to entity, creature accounts for LOS
updated jumpnrun example to include regeneration and energy use
trigger and spawner enhancements
updated to ImpactJS v1.23
Merge pull request #48 from collinhover/dev

Updated to ImpactJS v1.23 + misc bug fixes