porting to new jai version

add gjk bullet and also supports collision groups

updated gjk/gjkdir/epa to use a direction transform matrix

you can exclude bodies from your search

separated out shapes so they can be used on their own

not sure what I changed

improved load times and serialized physics stuff

Merge branch 'master' of github.com:kujukuju/KodaPhysics

idk

Create LICENSE.md

vertices a normal only

gjk prints remove

better physics collisions for convex and concave objects and standing on corners and epa ground resolutions

physics seems to work but it doesnt resolve things that are really technically ground correctly

this was my attempt to store simplexes themselves for cached gjk but it doesnt work