I have decided to remove Mango's beta status and call it version 1.0. Besides bug fixes, these are the new features:
The most important feature added is the ability to have user roles and permissions. For example, you are the administrator and you edit the blog settings, skin, etc, but you can give access to the admin to an author so that he or she creates posts, but can't change any of the blog settings.
Enjoy!
Important: if you are upgrading from an older version, read the intructions in the Downloads page.