From the brilliant minds that can't make a simple MC mod:
Meshes now take Vectors.
The current thread instances are now cleared during shutdown.
Implemented IMathObject.multiget().
Implemented MathHelper.rollDice(); It rolls a die, and returns whether or not the roll succeeds.
ModelSection is now its own class.
Tessellator is no longer deprecated, and has been refactored.
Renamed VertexBufferObject to VertexBuffer.
Expanded some on ArrayHelper.
ThreadTimed now stops the current thread should initialization fail.