Added animation loading and viewing (and GIF exporting).  There's still some bugs with some animations, possibly due to how it applies rotations/translations.  Re-arranged the class hierarchy in an attempt to shrink some of the packages
Added animation loading and viewing (and GIF exporting).  There's still some bugs with some animations, possibly due to how it applies rotations/translations.  Re-arranged the class hierarchy in an attempt to shrink some of the packages