Numerous functions and bugfixes in many versions:

version 1.2.3 - July 2012:
Removed MinimumCmsVersion
version 1.2.2 - July 2012:
Bug fix with registration admin page
Fixed bug with the registration page url when not using pretty urls
version 1.2.1 - July 2012:
Bug correction in registration page url
version 1.2 - July 2012:
New option on the "Add registration" backend page to only display non-expired events
version 1.1 - July 2012:
New preference to handle overquota per user registrations: when a user asks for 10 and the event limits to 5 per user, then you can choose to register 5 automatically, or to ask confirmation with a message - See the default registration template
New preference to choose if you want to export or not cancelled registrations to CSV
New preference to choose if you want tabs on the event edition page
Registration form: changed "Register" to "Modify registration" for the submit button, when you already have registered. The current number is displayed in the input field
Add a new "cancelled" value (checkbox) for the events. Useful to style cancelled events, and to show them in admin
Bug fixes
version 1.0 - June 2012:
Add the ability to edit a registration from the admin side
Events can now have a start / cutoff date for registrations
Seperated event info and registrations infos in two tabs on the event edition
New NMS export options: you can now choose if you want to export all/cancelled/registered users
NMS export: new option to clear the users before exporting (useful to keep a NMS list up to date)
Add a Published/Draft dropdown in event add/edit form
Add the registrations count for each event on the Smarty objects
Updated the default summary template to display the number of registered / remaining places
Events in admin are now sorted by date
Updated orig register template to display start / cutoff registrations datetimes, and the status of the registrations of the currently loggedin user (related to an event)
New info in admin events list: upcoming/in progress/past events
Added some colors in admin
Moved some functions to AireLibs module
Minor bug fixes
Fixed CMSMS Events help
Documentation update / Moved the tips in a new help tab
Note: some of the new functions in this release has been sponsored by FUSE (thanks)
Version 0.3 - May 2012:
Now uses AireLibs for the core and for CustomFields
New "CustomFields" tab to manage your extra fields
New Mail alerts on a new registration and unregistration
Registration list and export bug fix - Should now be more efficient
Little translation bugfix
Various bugfixes
Note: some of the new functions in this release has been sponsored by T-O (thanks)

Thanks to the sponsors : T-O (Belgium) and FUSE (Canada) :)