grosser/open_id_authentication — pull request #2 by sarupbanskota (2013-10-16 18:44:26+00:00)
Title: Add normalization - not sure if it's OpenID 2.0 compliant though

Doesn't really matter, cuz it doesn't break anything. The way to opt out of this is to simply not use the method.
I'd say it's a good idea to include it because most older URLs still would benefit from normalization.