FEP-2100: Unbound Group and Organization

[aschrijver]

More clearly referencing prior discussion (before renaming the FEP gave it a different ID):

FEP-8485: Unbound Actor

MR: #2 - WIP: Add FEP-8485. - fep - Codeberg.org SoTA: GNUsocial/fep: Fediverse Enhancement Proposals - feps/fep-8485.md at fep-8485 - fep - Codeberg.org Hello everyone! It is time to have groups over ActivityPub in #software:gnu-social (instead of OStatus-only). Groups in GNU social were never perfect. After the death of popular servers such as Qvitter, one could neither target groups hosted at Qvitter anymore nor contact the whole subscribers’ list to let them know of the new server hosti…