Update to latest versions of JqueryCore and JqueryUI modules
Update FieldtypePassword to use the more secure blowfish hash, where supported. Note that once you go forward with this, you can't go back (at least not without having to reset your password).
Update JqueryCore to 1.8.2
Merge PR #121 from @niklaka - this adds support for multiple sort fields anda  start selector to WireArray methods like find() and sort().
Updates to MarkupPagerNav to support first/last numbered item classes, as well as first/last list item classes (which previously were present but not implemented).
Dev branch: Fix issue with InputfieldRepeater 'add item' giving a JS error in some cases.
Add @mrx's GIF transparency from PR #127
Update ImageSizer to use @teppo's ImageType detection (rather than extension detection)
Remove ImageSizer extension detection (commented it out in case we decide to add back later)
Optimizations to FieldtypeRepeater per @niklaka
Updates to PW's session system, including addition of a database session handler module. To enable, install the SessionHandlerDB module and ProcessWire will then store sessions in the database rather than the file system. It also includes a new Setup page that lets you browse active sessions, though functionality is fairly basic at present.
Minor update to last commit
Update FieldtypeFloat to perform no rounding until a precision value is set
Add new $config->dbCache variable, which when set to false disables MySQL's query cache.
Update InputfieldEmail to support email confirmation option (double entry)
Fix for PHP 5.2.4 in core/LanguageFunctions.php. Update InputfieldTextarea to support initValue and extend from InputfieldText rather than Inputfield. Add new hooks to ProcessPageType per @apeisa.
Fix LanguageSupport fields so that if a field is marked required, only the default language is enforced as required.
Update templates-admin/scripts/main.js button detection and cloning to support jQuery 1.8+
Fix issue with InputfieldCheckbox showing the value rather than the label
Various Inputfield updates and fixes