https://github.com/KhronosGroup/glTF/issues/187
https://github.com/KhronosGroup/glTF/issues/258
https://github.com/KhronosGroup/glTF/issues/232
https://github.com/KhronosGroup/glTF/issues/85
https://github.com/KhronosGroup/glTF/issues/216
https://github.com/KhronosGroup/glTF/issues/240
https://github.com/KhronosGroup/glTF/issues/238
https://github.com/KhronosGroup/glTF/issues/188
https://github.com/KhronosGroup/glTF/issues/232
Made changes to allow use of libpng on Windows
KhronosGroup/glTF#68
Forgot a few files KhronosGroup/glTF#68
KhronosGroup/glTF#23 - Respected Collada's unit element and scaling models accordingly.
Upgraded OpenCOLLADA to latest version.
Fixed an auto formatting error.
Modified the converter to add a root tranformation node to make all models Y_UP.
KhronosGroup/glTF#23 - Fixed scaling of matrices.
Added some description in the comments.
Fixed camera's zfar and znear properties that now respect the file's meter attribute.
Added distanceScale property to the GLTFAsset so we don't have to pass it around.