DandyDev/pelican-bootstrap3 — pull request #119 by unbrice (2014-08-04 16:27:02+00:00)
Title: Adds a <link rel="canonical"> to index, articles and pages.

One can have mutliple URLs pointing to the same ressource, for these situations Google recommends setting a canonical URL.

Adding a rel=canonical is a simple and lightweight way of doing that, and it works across search engines.