Implemented Geometry2.merge().
Added offset and length parameters to Matrix3/Matrix4.applyToVector3Array().

As far as I'm aware this is no longer needed.

Misteriously when using the latest version of the lib on the project I'm working on I'm getting this error:
> Uncaught TypeError: Object [object Object] has no method 'set'
This is caused when THREE.UniformsLib.common.diffuse initialises a THREE.Color (THREE.Color.set() seems to be undefined then).
For some reason this only happens when I load Box2D before three.js. If I load it after is all good. But this fixes the problem too.
/ping @bhouston

fix three missed conversions to closures.  switch to extending math prototypes rather than replacing them.  This is to ensure that types created in closures within a type's prototype definition get their prototype updated with the full definition.

@WestLangley I've changed most of the vector.applyMatrix4() to vector.projectPoint().
Feel free to change back the ones that aren't needed (or let me know which ones can need to be changed back and I will do it).

Makes the code so much nicer imho...

expand Matrix3 with set, identity, copy, multiplyScalar, deteminant, clone;  Matrix3/4.getInverse will now optionally throw an exception; start Matrix3/4 unit tests

fixed #2728, Moved geometry primitives out of src/core into src/math.  src/core is now exclusive scene primitives.

Unfortunately we can't keep these settings always on: without "--jscomp_off=checkTypes" the amount of spam is just too crazy. It complains about tons of normal things, I had to manually dig out few useful warnings among 900 irrelevant ones.

See #2610

first update towards typedarray usage in matrices\n This was done with some simple replaces it doesn't work yet

This is now done as method of Matrix3 object which gets as a parameter Matrix4 object to be inverted (to be consistent with how Matrix4 => Matrix4 inversion is done).

As per discussion in #1615.

Minor tweaks.

I don't remember when was the last time I used them. Current Web Developer Tools do this already for you.

Color::updateRGBA ⟶ Color::updateRGB

WebGLRenderer now as fast as WebGLRenderer2.

https://github.com/mrdoob/three.js/pull/97