I tried to create a reversed list, as HTML5 allows, but could only create a normal list. This made me very sad, because my list of created articles on my user page needs to be organized manually, and I want to automate the numeration. Can you please add "reversed" to the whitelist of the OL parameters?
Thanks. As I don't follow release notes and dates about MediaWiki releases, can someone please notify me (it can be here) when 1.27 is fully deployed, so I can start using this feature?
If you're asking about Wikimedia wikis, it should be deployed already. https://www.mediawiki.org/wiki/MediaWiki_1.27/Roadmap has the dates, version 1.27.0-wmf.8 (as tagged by @ReleaseTaggerBot above) was deployed to all wikis on Thursday, 10 December 2015.