[thomasdarimont]

Release 0.5.0, then 0.6.0-SNAPSHOT.

Merge with a merge commit or a rebase, not a squash: the commit "Release 0.5.0" has to reach main unchanged, etc/release.sh release tags it there.

Release notes, from CHANGELOG.md:

The first poll follows the registration of the stream at once: the registrar wakes the
poller up, and a poller that starts before the stream is registered looks again after a
second instead of waiting the full interval. New API for that: SsfStreamRegistrar.addListener,
SsfPoller.wakeUp and setEndpointRetry.

Added

• SsfStreamRegistrar.addListener tells a listener when the stream is registered, and
  SsfPoller.wakeUp() ends the pause between two polls. SsfTransmitter wires the two, so the first
  poll follows the registration of the stream at once; the Spring Boot starter and the Quarkus extension
  build their transmitters through it.

Fixed

• SsfPoller looks again after one second (setEndpointRetry) while the poll endpoint of the stream
  is not known yet, instead of waiting the full interval: an application whose stream was still being
  registered when the poller started polled for the first time up to an interval later.