Date.prototype.format

[Marc Harter]

This may of been thrown though the ringer already but I thought I'd ask.

http://blog.stevenlevithan.com/archives/date-time-format

This is some awesome work on date formatting.  What do we think about
having a native Date Format implementation in es.next?  Complications?
 Seems like this a very commonly needed option.  Especially w/ SSJS
now getting more popular.

-- 
Marc (@wavded)