Enhancements:

• Added auto-reconnect for situations when MySQL closes connection in the middle of the request
• Added new config options for better controlling the way mailing is working (native mailer and marking messages as bulk options)
• System permission 'manage_trash' has been added
• Administrators and project managers see all objects that are in the Trash
• GZIP compression for assets (js, css and print collector files) can be turned off by setting COMPRESS_ASSET_REQUESTS option to false in config.php file
• {title} accepts language parameters just like {lang} does

Bug Fixes:

• Fixed fread() problem in collector files
• HTML Purifier now uses /cache folder to cache definitions
• Styles in visual editor are translatable
• Time records API returns same records as web interface
• Fixed notice in DashboardController
• Many localization fixes and tweaks (thanks to Frederik Sauer)
• Welcome message after user login is now in user's language
• Fixed problem when, in some rare cases, task parent form was loaded when tasks was created with AJAX request
• Aligment of 'Complete ticket with this comment' checkbox fixed
• Empty Return-Path turned off by default
• Uppercase letters can be used in email addresses
• Fixed infinite visual editor explanding in Google Chrome
• Fixed issue where on some installations, incoming mail was treating first empty line in the imported email, as beginning of hidden email history

API Changes:

• Comments now return list of files attached to them
• Fixed problem with Pages category not listing pages in API response