ModelIO macOS 10.14 to 10.15 API Differences

MDLAnimatedValueTypes.h
Added MDLAnimatedQuaternion
Added -[MDLAnimatedQuaternion setFloatQuaternion:atTime:]
Added -[MDLAnimatedQuaternion setDoubleQuaternion:atTime:]
Added -[MDLAnimatedQuaternion floatQuaternionAtTime:]
Added -[MDLAnimatedQuaternion doubleQuaternionAtTime:]
Added -[MDLAnimatedQuaternion resetWithFloatQuaternionArray:atTimes:count:]
Added -[MDLAnimatedQuaternion resetWithDoubleQuaternionArray:atTimes:count:]
Added -[MDLAnimatedQuaternion getFloatQuaternionArray:maxCount:]
Added -[MDLAnimatedQuaternion getDoubleQuaternionArray:maxCount:]
MDLTransformStack.h
Added MDLTransformOrientOp
Added MDLTransformOrientOp.name
Added MDLTransformOrientOp.animatedValue
Added -[MDLTransformStack addOrientOp:inverse:]