Version 1.0.0
- Clamp large rotations. DONE
- Restitution. DONE
- Prismatic joint. DONE
- Limits and motors. DONE
- Handle equal limits. DONE
- Fast broadphase. DONE
- Collide connected. DONE
- Island sleeping. DONE
- Custom allocators. DONE
- Convex polygons. DONE
- Compound shapes. DONE
- Constraint graph. DONE
- Contact solver. DONE
- Joint solver. DONE
- Improved stability. DONE
- Improve contact matching. DONE
- Contact solver. DONE
- Joint solver. DONE
- Mouse picking. DONE
- SAP AABB query. DONE
- Distance joint. DONE

Version 1.0.1
- Joint limit bug fix. DONE

Version 1.1.0
- Handle dangling joint pointers. DONE
- Collision filters. DONE
- User data. DONE
- Improved API. DONE
- Orphaned mouse joint. DONE

Version 1.2.0
- Rename engine.lib to box2d.lib. DONE
- Code layout. DONE
- Circles. DONE

Version 1.2.1
- Handle proxies hitting the world boundary. DONE
- Freeze out of bounds bodies, notify user. DONE
- Handle running out of pairs. DONE

Version 1.3.0
- Documentation phase 1. DONE
- Add "no rotation" option to body def. DONE
- b2Settings configuration for pixel coordinates. DONE
- Slider-crank test. DONE
- Notify client when a body is frozen. DONE
- Fix collide-connected. DONE
- Fix compound polygons. DONE
- Check degenerate containment resolution. DONE (no problem found)
- Access to contacts and joints. DONE

Version 1.4.0
- Gear joint. DONE
- Pulley joint. DONE
- Personalize the phpbb header. DONE
- Document contacts and new joint types. DONE

Version 1.4.1
- Fix contact list. DONE
- Damping. DONE
- Poly-circle ids. DONE
- Improve mouse joint. DONE

Version 1.4.2
- Improve joint stability.

Version 1.4.3
- Fix thin polygon collision.
- Simplify broad-phase internally.
- OSX patch.
- Fix compound body freezing.
- Collision filter callback.

Version 2.0.0
- CCD.
- Contact callbacks.
- Primitives for collision queries.
- Get rid of deferred destruction.
- JointDefs in local coordinates so that save/load works with limits.

Version 2.1.0
- Meshes (segment soup).
- Ray casts.

Version 2.2.0
- Handle orphaned gear joint.
- Friction joint for top down games.
- Rolling resistance for circles.
- Re-filter function.

Version 2.3.0
- Convex hull tool.
- Angle joint.

Version 2.4.0
- Spline joints.

Version 2.5.0
- Convex decomposition.

Version 2.6.0
- Ropes and particles.

Version 3+
- Performance.
- Try position correction clamping and larger Baumgarte.
- Characters.
- Vehicles.
- Tree constraints.
- Buoyancy.
- Heightfields.
- Static point-grids.
- Revolute 3x3 effective mass.
- Use velocity lambda to control NGS clamping.
- Sensors.
- Add/remove shapes from a body.