Merge with https://github.com/zfedoran/convert-to-threejs-json/ Apr 28, 2013 version
coverter_to_threejs.py: copy textures of import files to output folder, and fix dae model's get uv index bug.
coverter_to_threejs.py: fixed issue #3808, and handling some issues about the asset's texture copy.
Merge branch 'converterEnhance' of https://github.com/DaoshengMu/three.js into dev
add License info to minified build
Update build.js
Update vector2 to add divide and multiply. 

fixes #4477
author: @WestLangley
Make it possible to remove animationData. 

For the moment, It is use at own risk.
Merge branch 'patch-8' of https://github.com/gero3/three.js into dev
Simpler header.
Merge branch 'patch-13' of https://github.com/gero3/three.js into dev
Updated builds.
AnimationHandler: Code clean up.
Updated builds.
AnimationHandler: Removed unneeded warning. Fixes #3494.
Updated builds.
Added THREE.Cache.
This may create memory leaks in the future, depending on the usage...
Implemented THREE.Cache in Loader, XHRLoader and ImageLoader. Closes #4059.
Updated builds.
UTF8Loader: Updated some of the addAttribute calls.
Need to think what to do when the array is already created, like index in this case...