It's still not fully working, there seems to be some breakage, but it's almost there.

move Clock.js from src/math to src/core per @alteredq https://github.com/mrdoob/three.js/issues/2753#issuecomment-11057521

remove Raycaster dependence on face.centroid, instead use 1st vertex of the face (vertices[face.a]).

make it possible to run unit tests against either three.js, three.min.js, three-math.js as well as direct sources.

fixed #2732, including ThreeJS individual JavaScript files directly rather than using build/three.js

New bilinear filtering works nice with cascading shadow maps.

Triangle3.barycoodinate -> Triangle3.barycoordFromPoint. Add unit test for barycoordFromPoint.  Fix order of components in returned barycoords.

All unit tests pass now for Box2, Box3 and Triangle3.  Fix bug in Plane.js caught in Triangle3 unit tests.  Replace Raycaster.pointInFace3 with Triangle3.containsPoint, no loss of FPS in examples.

add Triangle3, add optionalTargets to Box2,Box3,Plane,Sphere,Ray where possible to reduce GC load, add Triangle3 unit tests.

See #2698

Camera matrix was being updated after the style was get for the camera element, needs to be done before else it lags a frame behind.

More garbage collection friendly (on repeated calls) Geometry.computeBoundingBox() and Geometry.computeBoundingSphere()