Adds new settings to ColladaUtils::ImportSettings and TSShapeConstructor::ImportSettings for persistence. Shape will now be re-imported with the original settings if the source art is newer or the cached.dts file has been deleted.
Fixes material transparency blend mode assignment.
Adds implementation for override scale, material prefix and always/never import options.
Reads and applies metadata fields for scale and up axis from formats that provide it.
Eliminates the assimp.log file and redirects log messages to console.log. Verbose logging is enabled in debug builds.
Caches textures to disk for shape formats that support embedded textures.
Only the compressed texture codepath has been tested. There are a large number of binary gltf files with embedded (and pbr) textures for testing here: https://github.com/KhronosGroup/glTF-Sample-Models
The lodType, singleDetailSize, adjustCenter and adjustFloor options been added to the importer.
Implementation of $Assimp::FlipNormals has been fixed.
$Assimp::FlipWindingOrder has been added to expose aiProcess_FlipWindingOrder.
Logging is now enabled and directed to assimp.log.
