Add document mousemove and mouseup listeners to the list of listeners to be removed on destroy, fixes #394
Call this.inherited(arguments) in _destroyColumn so that cleanup takes place in ColumnReorder+ColumnSet, fixes #396
Merge branch 'fix-394' of git://github.com/kriszyp/dgrid into leak-fixes
Merge branch 'fix-396' of git://github.com/kriszyp/dgrid into leak-fixes
Update changelog to note memory leak fixes