tweenMachine Update

Updated the tweenMachine tool last night (a.k.a. early this morning). Now it recognizes when channels are selected in Maya's channel box, and only operates on those channels. This allows you to easily favor specific channels in different ways, which should make it a lot easier to block out arcs, overlap, and other things I probably haven't even considered. I've been wanting to add this feature for some time now, and finally got the "oomph" after reading a post on an Animation Mentor forum from David Martinez that he was looking forward to it. Ask and ye shall receive and all that. ;)