turning ri:automaticInstancing on by default
TIFFImageReader now checks if the tif is tagged as coming from tdlmake, and if so, sets the sourceColorSpace from the image description set by tdlmake.
fixed crash in SceneShape::hasSceneShapeObject for invalid scene
Merge pull request #353 from davidsminor/mayaHasSceneShapeObjectCrash

fixed crash in SceneShape::hasSceneShapeObject for invalid scene
Merge pull request #348 from davidsminor/autoInstancingDefaultOn

turning ri:automaticInstancing on by default
Reformatted for style consistency
Merge pull request #352 from danieldresser/linearizeTDLs

TIFFImageReader now checks if the tif is tagged as coming from tdlmake, ...