upgrade box2D #49
Description
libgdx currently uses 2.3.1?
- update: 2.4.1: Box2d 2.4.1 libgdx/libgdx#7144
- wait for gdx-jnigen 3.0 https://github.com/libgdx/gdx-jnigen
- wait for someone to make java bindings: Update box2d libgdx/libgdx#5948 (comment)
- update to v3! box2c