Update list for Roundcube Webmail 0.5.1

Roundcube Webmail 0.5.1 changelog from February 11, 2011

We're happy to announce that a new major release of Roundcube is now available for testing. As usual it contains many bugfixes (thanks to all the reporters and contributers) and brings more stability and speedup as well as some new features such as Internationalized Domain Name (IDNA) support, support for shared/global IMAP folders and support for SMTP Delivery Status Notifications. Plus some minor changes to the message list UI and many improvements under the hood. October 06, 2010 Bugfix release 0.4.2 out nowAs you might have heard, also the developers of Roundcube are just human beings and thus not always creating perfect and 100% bug free work. The last 0.4.1 release fixed many bugs but also introduced a quite annoying new one. That's why the next release follows just one week later. It fixes a few important bugs, especially the "Server Error" message when expanding/collapsing folders and it also updates some previously incomplete localization files. September 29, 2010 Update to 0.4.1 releasedThis update release fixes the most important bugs of the 0.4 stable release such as the disappearing upload box or buggy SQL scripts. Further more support for format=flowed has been improved and some localization files have been completed. August 07, 2010 Version 0.4 (stable) releasedAfter the big new features in 0.4-beta this release now completes the unfinished work and fixes bugs related to the new threaded message listing and address groups features. We also cleaned up the user interface and tried to make all UI elements more consistent. April 23, 2010 New version 0.4-beta releasedA new major release is now available for deep testing. With this version we fixed over 50 bugs and added new features like threaded message listing and contact groups support as well as many little improvements that make e-mail reading with Roundcube an even better experience. March 05, 2010 New nightly build released for testingFor the upcoming version 0.4 of Roundcube Webmail we have done some refactoring of the backend code which improves both performance and reliability of the application. These changes now need to be well tested before we continue to implement new features like threaded message listing planned for the 0.4 release. October 31, 2009 Update to 0.3.1 releasedThis update release fixes lots of bugs and improves the file upload when composing a mail message. Also some of the plugins have been improved and translated into more languages.