[tkmodel] Start to work on tkmodel using AssimpNet
[Toolkit.Compiler] Update to latest Assimp.NET. Recompile assimp binaries to use latest FBX support
[Toolkit.Graphics] Add Material for ModelData
[Toolkit.Compiler] Simplify MaterialKey
[Toolkit.Compiler] Finish support for Model compiler, tkmodel command line and msbuild task
[Toolkit.Compiler] Finish support for Model compiler, tkmodel command line and msbuild task
[Toolkit.Graphics] Add Model classes. First implem draft, not yet tested.
[Toolkit.Graphics] Fix model loading.
[SharpDX] Rename SharpDX.Win32.PropertyKey to PropertyBagKey
[Toolkit.Graphics] Use PropertyKey/PropertyCollection for all properties (EffectData, ModelData). Make Material definition more generic by using only properties.
[Toolkit.Graphics] Add BoundingSphere to mesh. Force AssimpLibrary to use a specific path (default was not working when running from msbuild task). Start to work on ModelRenderer. Add temporary sample test for displaying a model.
[Toolkit.Graphics] Add BasicEffectRenderer to support rendering of models using classic BasicEffect.
[Toolkit.Graphics] Add support for embedded resources. Simplify model loading to match XNA behavior. Add several models to test. Pending issues if a model have wrong relative file name for FBX