`TZD` is no longer a valid format placeholder

[Thanh Tran]

Extension version 1.1.2.

Tried this format:

{ "insertdatestring.format": "YYYY-MM-DDThh:mm:ssTZD" }

And it turns out: 2017-02-03T13:25:19T+073. (the last D is considered date of month)

I noticed that you changed the date formatter to date-format-lite package, and its time zone designator is Z. So documentation should follow.

Besides, the date formatter also support iso as format settings which output the ISO date time format at GMT. I think for convenience sake, this should be noted down in documentation as well.

[Jakub Synowiec]

Thanks for reporting.