Refactored uniforms for better type safety
Refactored attributes for better type safety
Added WebGL_Custom_Attributes example
Fixed array of Texture and array of Matrix uniforms
Added Uniform.clone()
Use doubles for float uniforms
Cleanup WebGL_Custom_Attributes example
Merge pull request #59 from nelsonsilva/uniforms

Refactored shader uniforms and attributes for better type safety.
Added WebGL custom attributes examples.
Refactored Face to remove IFace interfaces
Change Geometry to remove type comparisons on Face
Added default a,b,c(,d) arguments to Face3/4 constructors
Fixed face patching in geometry.dart
Change Ray to remove type comparisons on Face
Add setFrom to Face, mimic new Face hierarchy in RenderableFace and replace Face type tests with face.size tests
Fix Projector and Renderables
Refactored Renderables
Merge pull request #78 from threeDart/remove_iface

Removed IFace and refactored Renderables