visionmedia/jade — pull request #1516 by acauamontiel (2014-05-06 05:05:14+00:00)
Title: Use <!doctype html> instead of <!DOCTYPE html>

Return back to the lowercase doctype in order to be more consistent with the lowercase of the html tags.

References:

* h5bp/html5-boilerplate#1522
* http://www.whatwg.org/specs/web-apps/current-work/multipage/syntax.html#the-doctype