Mention Rebased under *Events and Meetups*

README.md

@@ -324,6 +324,8 @@ Emoji's for each entry provide additional information on project status:
 
 * **Friendica** (see above) has an [events engine that federates events over AP](https://socialhub.activitypub.rocks/t/activitypub-at-36c3-the-decentral-assembly-and-fediverse-party/402/5) and is looking to test interop with other AP events apps. [NextCloud federated events](https://github.com/nextcloud/calendar/pull/878) are in the works but this [may or may not be AP-compatible](https://github.com/nextcloud/server/issues/1440).
 
+* **Rebased** (see above) also supports Mobilizon-compatible events. Only available in Soapbox front-end.
+
 * :ghost: [**FedEvent**](https://github.com/shiburizu/fedevent): A prototype for federating event information
 
 #### Files, Contacts, and Calendar Syncing Apps