Postbox 2.0.1

* Improved Growl Alerts - For Mac OS X users, growl notifications for new mail now include the subject
* 1Password Support - support for 1Password on Mac OS X when opening attachments from 1Password
* SpamSieve - Support for SpamSieve on Mac OS X (add-on coming soon)
* Fixed an issue with font sizes not being set correctly on outgoing HTML messages
* Fixed an issue where urls were not always linkified in the message pane
* Fixed an issue with account groups when cycling a message between Unread, Read and Pending
* Fixed an issue opening a plain text draft where in plain text mode where formatting was getting dropped
* Fixed a problem with selecting large conversations yielding an XML error in non English builds
* Performance and Stability Improvements.