Update to 3.20110225. From the changelog:

  * editpage: Avoid inheriting internal page types.
  * htmltidy: Avoid breaking the sidebar when websetup is running.
  * transient: New utility plugin that allows transient pages to
    be stored in .ikiwiki/transient/ (smcv)
  * aggregate: Aggregated content is stored in the transient underlay.
    (Existing aggregated content is not moved, since it will eventually
    expire and be removed) (smcv)
  * autoindex, tag: Added autoindex_commit and tag_autocreate_commit that
    can be unset to make index files and tags respectively not be committed,
    and instead be stored in the transient underlay.
    Closes: #544322 (smcv)
  * autoindex: Adapted to use add_autofile. Slight behavior changes
    in edge cases that are probably really bug fixes. (smcv)
  * recentchanges: Use transient underlay (smcv)
  * map: Avoid unnecessary ul's in maps with nested directories.
    (Giuseppe Bilotta)
  * Fix broken baseurl in cgi mode when usedirs is disabled. Bug introduced
    in 3.20101231.
  * inline: Fix link to nested inlined pages's feeds. (Giuseppe Bilotta)
  * inline: Add 'id' parameter that can be used when styling individual
    feedlinks and postforms. (Giuseppe Bilotta)

(schmonz)