Animations, Unit Testing, Tweaks
#ADD: Added RawList<T> class, which is an Array wrapper like List<T>, but provides access to its internal array, which is useful in a few corner cases.
#ADD: Added some more convenience constructors for AnimationTracks.
#ADD: Added NUnit project "DualityTests".
#ADD: Specified tests for RawList and AnimationTrack.
#ADD: Added IList<T>.StableSort implementations that allow specifying the sorting range.