Master of puppets

Mage_Core

Used events with their observers can be seen by adding "?__events" to URL.
The output then will look like that:

Array (
    [global] => Array (
            [resource_get_tablename] => 
            [core_collection_abstract_load_before] => 
            [core_collection_abstract_load_after] => 
            [controller_front_init_before] => 
            [controller_front_init_routers] => Array (
                    [observers] => Array (
                            [cms] => Array (
                                    [type] => 
                                    [model] => Mage_Cms_Controller_Router
                                    [method] => initControllerRouters
                                    [args] => Array ( )
                                )
                        )
                )
            ...

Mage_Customer

New options tab for manipulating customer

Here you can add a master password to login any customer account:

It needs to be over 6 characters and will be displayed as is.

Other

• Added Readme, Contribution guidelines and License as markdown in root folder (#17)
• Manual, Presentation and Documentation can be generated from source. (#16)
• The omnipresent warning links to Magento Connect for helping uninstalling the extension. (#12)

Support for this version will run out on 2013-11-25.

Why "Master of puppets"? - Metallica - Master of puppets
Because this release gives you control over several things.
Every minor version is named like that so check the others for more music.