Reference: describe kata search

[hobovsky]

Mention search features which are not exposed via UI:

• "Search" box accepts some fields as parts of elasticsearch queries: author:username for kata of a specific author, -author:username to ignore kata of a user
• Append outdated query parameter to see kata without the latest version of the language enabled. You can combine with other search filters: https://www.codewars.com/kata/search/scala?q=&outdated

[hobovsky]

https://github.com/codewars/codewars.com/discussions/2736#discussioncomment-3256140

Non-public listing of retired kata: https://www.codewars.com/kata/retired