merging in develop

diff --cc moment.js
index 839a9e2b313a66c0ec2c9c202022ca35b1d65526,3f84fcc30de83f7a49b01447c890cd6e3dbccdd9..05011fadfe588ecb113e2cb9d6cef33450d28691
--- 1/moment.js
--- 2/moment.js
+++ b/moment.js
@@@ -1249,6 -1380,12 +1391,10 @@@
          return obj instanceof Duration;
      };
  
 -    // for use by developers when extending the library
 -    // https://github.com/moment/moment/issues/1066
+     for (i in lists) {
+         makeList(lists[i]);
+     }
+ 
      moment.normalizeUnits = function (units) {
          return normalizeUnits(units);
      };

diff --cc test/moment/create.js
index 62cd14e7107617fbff95eeb010f69f4198bd8b03,62d3c8c1ef8173cc4b9a13c0dae7c1e664262016..186eec79c23f4f685a8e998ae8fe18a4a325470f
--- 1/test/moment/create.js
--- 2/test/moment/create.js
+++ b/test/moment/create.js
@@@ -461,11 -450,13 +461,15 @@@ exports.create = 
      },
  
      "null" : function (test) {
-         test.expect(3);
+         test.expect(6);
 -        test.equal(moment(''), null, "Calling moment('')");
 -        test.equal(moment(null), null, "Calling moment(null)");
 -        test.equal(moment('', 'YYYY-MM-DD'), null, "Calling moment('', 'YYYY-MM-DD')");
 -        test.equal(moment.utc(''), null, "Calling moment.utc('')");
 -        test.equal(moment.utc(null), null, "Calling moment.utc(null)");
 -        test.equal(moment.utc('', 'YYYY-MM-DD'), null, "Calling moment.utc('', 'YYYY-MM-DD')");
++
++        test.Ok(!moment('').isValid());
++        test.Ok(!moment(null).isValid());
++        test.Ok(!moment('', 'YYYY-MM-DD').isValid());
 +
-         test.equal(moment('').isValid(), false);
-         test.equal(moment(null).isValid(), false);
-         test.equal(moment('', 'YYYY-MM-DD').isValid(), false);
++        test.Ok(!moment.utc('').isValid(), "Calling moment.utc('')");
++        test.Ok(!moment.utc(null).isValid(), "Calling moment.utc(null)");
++        test.Ok(!moment.utc('', 'YYYY-MM-DD').isValid(), "Calling moment.utc('', 'YYYY-MM-DD')");
          test.done();
      },