[Zope-Annce] Zwiki 0.22 released

Summary: Memory efficiency/performance/scalability improvements; simpler page types and DTML control; zwiki_plone and default skin updates; wikimail tweaks; STX images; bugs, fixes, features. Quite a lot going on! Good luck. See http://zwiki.org and http://zwiki.org/ReleaseNotes for download and details. I hope to sort out my zope.org publishing process soon. I'm happy to announce that zope.org and plone.org are now using mainstream Zwiki. This is a big milestone. There have been a number of installation issues with the zope.org wikis but these are being addressed (thanks webmasters). Also I think Zwiki may be coming up on it's 5th birthday around now..