Here's the changelog:

Release 1.0.22 (23 August 2011):
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Database upgrades:
9182 Unique index too long for report settings table

Improvements:
8485 Finnish and Hebrew language packs updated
9142 Import sv.js for TinyMCE Fix issues when viewing TinyMCE in Swedish
8971 Add course custom fields to course completions report source
9210 Add return links from Completion details page

Bug fixes:
9216 You can signup for Facetoface session in the past from the site calendar This is no longer possible
9187 F2F events on calendar not updating when activity is updated When you rename a F2F activity the calendar events are correctly updated
9212 Activity completion criteria not showing grade requirement
9165 Hard coded lang strings in My Team Members embedded report
9082 Report Builder requires the PHP "Calendar" module Totara no longer dependant on the PHP Calendar module