Change log for jquery.udraggable plugin.

For full commit history see:

    https://github.com/grantm/jquery-udraggable/commits/master

0.3.0  2014-01-23
    * new methods: destroy, disable, enable
    * throw an exception if unsupported method called

0.2.0  2013-09-06
    * "parent" containment now refers to positioning parent - offsetParent()
    * element position now normalised to top & left if right or bottom
    * redraws now synced via requestAnimationFrame
    * new "getStartPosition" and "positionElement" options
    * new "handle" option

0.1.0  2013-08-29
    * initial release
