two elements sorting problem

[despagito]

When there're two elements,then after three times of exchanging, there will be a bug:

angular.min.js:103 Error: Failed to execute 'insertBefore' on 'Node': The new child element contains the parent.
    at Comment.<anonymous> (jquery-1.8.2.min.js:2)
    at init.domManip (jquery-1.8.2.min.js:2)
    at init.after (jquery-1.8.2.min.js:2)
    at Object.enter (angular.min.js:176)
    at Object.move (angular.min.js:176)
    at angular.min.js:235
    at Object.fn (angular.min.js:122)
    at l.$digest (angular.min.js:123)
    at l.$apply (angular.min.js:126)
    at Sortable.onEnd (ng-sortable.js:141)

and in the first of exchanging, the callback parameter evt return the wrong order in evt.models.

[samjacobclift]

fixed please pull latest

[samjacobclift]

reopen the issue if its not :)