Hey,
- start enforcing @since annotations for new core code
This would help so much :) I requested this about half a year back and got a bunch of sarcasm back then. Quite often I find out that I released some version of some extension that's not compatible with an older version of MediaWiki it's supposed to be compatible with, since I used a newly introduced method without realizing it. Then I need to find out where this is used, what version of MW it was introduced in (lot's of fun this step), add the @since annotation to core, update all extensions that are using this while they can't with b/c code, and make new releases for all these extensions. That's a lot of work, so I don't think it's to much to ask to add an @since tag to everything you add, how silly it might look (to you).
Cheers
-- Jeroen De Dauw http://www.bn2vs.com Don't panic. Don't be evil. --