moment/moment — pull request #1350 by ichernev (2013-12-11 18:33:09+00:00)
Title: Fix iso week parsing for small years

Apparently Date.UTC works only for years after 1900:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date

To form an iso date, from any given year you should use an iso formatted
string. That string doesn't need 'Z' in the end ...

This is a fix for #1325