Mailplane doesn't mess up Google Calendar's time line anymore.
"Send & Archive" labs feature
Mailplane 3.0 does now properly support "Send & Archive" Google Labs feature.
Cycle through tabs
Cycle with Control-Tab and Control-Shift-Tab through tabs.
"New..." tabs menu item
Add a new account directly via tabs "New..." menu item.
Further fixes and improvements
* Mailplane does not freeze anymore.
* Reversed message order inside notifier.
* Improved usability of account creation and modification.
* Google Apps account appear immediately after login.