March 30th, 2012· Fix for issues when using this Add-on to hide the tabbar in TB 11.
October 11th, 2011· Improved compatibility to other AddOns.
July 18th, 2011· Update for Thunderbird 5.*
March 17th, 2011· Added button to go to the messages (folder) tab, if you use this button and auto-hide the tabbar, LightningButton will hide the tabbar if there are only tabs open you added toolbar buttons for.
August 4th, 2010· Added Convert to Task and Convert to Event buttons (thanks to Joachim Herb)
June 30th, 2010· Version Bump for Thunderbird 3.1
April 14th, 2010· Added new calender entry and new task button.
March 30th, 2010· Added Feature: Now the buttons will toggle the tabs, so clicking at a button if the corresponding tab is active will close it.
March 23rd, 2010· Bugfix: If hiding activated, the Buttons will stop working.
March 18th, 2010· Added hiding of the default-buttons in the tab bar.