`time` element syntax

[davidchambers]

Recent discussion on the Markdown mailing list has resulted in several suggestions as to syntax for the time element introduced in HTML5.

Wrapped text, wrapped datetime

The conference commences on [30 May 2011]{2011-05-30T15:00-07:00}.

Wrapped text, implicit reference

The conference commences on [30 May 2011].

[30 May 2011]: datetime: 2011-05-30T15:00-07:00

(The pubdate attribute could be supported by appending ", pubdate" to the definition.)

Bracketless text, implicit reference

The conference commences on 30 May 2011.

*[30 May 2011]: 2011-05-30 15:00 -07:00

This is an extension of PHP Markdown Extra's abbreviation syntax. It also highlights the possibility of formatting the datetime attribute in a more human-friendly manner.

(The pubdate attribute could be supported by appending ", pubdate" to the definition.)