Box2D 3.1

Version 3.0 was released about 8 months ago. It was a huge update and it needed some refinement. Version 3.1 addresses most of the bugs and build problems. It also introduces some new features and refinements.&#xA;Character mover I&rsquo;ve added experimental character mover support to 3.1. This uses a geometric solver. It should be useful for games that want greater control than what you get with…