message: Fixed: remove useless module.
diff: @@ -3,7 +3,6 @@ import sortBy from 'mout/array/sortBy';
  import isNumber from 'mout/lang/isNumber';
  import forOwn from 'mout/object/forOwn';
  import find from 'mout/object/find';
  -import keys from 'mout/object/keys';
  import ObjectAssign from 'object-assign';
  import shortid from 'shortid';
  import storage from 'store';
  