Add basic Vector3 class.
Add Face3 and Quad classes.

Update Vector3 applyProjection() method to take a far plane parameter.
Add AABB and Sphere classes for collision detection.
Add utility functions.
Add Color class.
Add PointLight class.
Add three.js attribution.
Add Matrix4 class.
Add Vector4 class and Vector3 matrix position method.
Add Object3D, Entity, Geometry, and Material classes.