Model updates, fixes for hector
Merge https://github.com/rherriman/pavara
THIS COMMIT IS BROKEN! I need to stash something I was working on because I'm losing my computer today. Don't pull this yet! Started work on 'triangle explosions'
updated explosions, not totally broken but not finished either (you can pull this safely)
Merge https://github.com/rherriman/pavara
Fixed a small bug with random incarnators

If a starfield was used in a map, random incarnators were broken due to the starfield seed.
Added an RK4 integrator class that is now being used for hector gravity.
Modified integrator to use vectors and points.
Got friction working kind of. It should be a per PhysicalObject thing, but hectors do not currently know what they are walking on, so that's going to be a bit more involved.
merging pov's physics updates
I think this is closer to realistic friction
The hectors XZ velocity should be adjusted when hitting a wall, so that the hector will not slide around corners on slippery surfaces or change direction in midair if a jump includes sliding off a wall.
In order for it to be easier to jump onto blocks from right in front of them, there is a tiny amount of friction in air so you can kind of move in air. Apparently avara did this?
Merge branch 'master' of http://github.com/jonathanvoss/pavara
Merge https://github.com/jonathanvoss/pavara
added 3d sound demonstration with incarn sound and footstep sound (camera is frame of reference)
fixed incarnator unique name problem
fixed the sounds demo for real this time and cleaned up
Merge branch 'master' of https://github.com/assertivist/pavara
Merge https://github.com/assertivist/pavara