Opera 10.0 Build 1219 Alpha

Changelog

* Several backend improvements to autoupdate
* Made content filter rules with a whitespace at the end work
* All languages are now included but not all are completed. Do not file bugs on text in English where you expect
* Made spellchecking work on contenteditable elements
* Switching between html and plain text mail composition works better now
* Added option to doubleclick a tab to close it opera:config#UserPrefs|DoubleclicktoCloseTab
* Fixed crash when undeleting and running a widget
* Improved stability in the search engine which indexes webpages and mail
* Plus tons of behind the scenes changes, the low level changelog is more than 1000 lines.
* Mac: Fixed startup crash on Mac OS X 10.3/Panther
* Mac: Fixed the mail/chat counter background
* Mac: Fixed low framerate on fullscreen YouTube videos

http://snapshot.opera.com/windows/o100s_1219m.exe