Looks like we need some more discussion on this - can we please open a new issue on this topic?

For oc6 I'd prefer to keep hooks/listeners/event dispatchers out of the new api-
Apps can still use the existing OCP\Hook mechanism - we need to keep that anyhow at least for oc6.

For oc7+ we will introduce whatever the discussion result will be.

@bartv2 @icewind1991 @karlitschek objections? THX