Update to 3.20100704. From the changelog:

  * Changes to avoid display of ugly google openids, by displaying
    a username taken from openid.
  * API: Add new optional field nickname to rcs_recentchanges.
  * API: rcs_commit and rcs_commit_staged are now passed named
    parameters.
  * openid: Store nickname based on username or email provided from
    openid provider.
  * git: Record the nickname from openid in the git author email.
  * comment: Record the username from openid in the comment page.
  * Fixed some confusion and bugginess about whether
    rcs_getctime/rcs_getmtime were passed absolute or relative filenames.
    (Make it relative like everything else.)
  * hnb: Fixed broken use of mkstemp that had caused dangling temp files,
    and prevented actually rendering hnb files.
  * Use comment template on comments page of example blog.
  * comment.tmpl: Fix up display when inline uses it to display a non-comment
    page. (Such as a discussion page.)
  * git: Added git_wrapper_background_command option. Can be used to eg,
    make the git wrapper push to github in the background after ikiwiki
    runs.
  * po: Added needstranslation() pagespec. (intrigeri)
  * po: Added support for .html source pages. (intrigeri)
  * comment: Fix problem moderating comments of certian pages with utf-8
    in their name.

(schmonz)