Log Message:
ikiwiki: update to 3.20200202.4. Changes:

* build: Don't install an empty share/ikiwiki/examples/doc/examples
* aggregate: When a feed has an enclosure that is an image, audio, or
  video, include the enclosure in the generated page.
* aggregate: Also support feeds with media:content tags.
* git: Pass --no-rebase when pulling, to avoid git warning messages
  about pull.rebase.
* highlight: Adapt to API change in highlight >= 4.0
* Avoid 'Duplicate specification' for option "s"
* html5: Switch from pubdate=pubdate to class=dt-published
* mdwn: debug() which implementation is chosen
* recentchanges: support non-CGI links
* add geo: scheme
* pass PAGE variable to templates
* po: fix support for UTF-8 with po4a 0.58+

pkgsrc changes:

* Drop MESSAGE.