Release notes for Eventing 0.19.0

🎁 New Features

🎁 Add new feature
Run kind e2e tests every 4 hours on Github actions. (#4412, @vaikas)

🐛 Fix a bug which could cause eventing-webhook to crashloop on initial creation. (#4168, @ian-mi)
🐛 Fix bug
Change the image pull policy so sinkbinding source tests work with kind. (#4317, @vaikas)
🐛 Fix bug
Dependency readiness could sometimes be missed because mismatched informer/lister was being used in the trigger reconciler. (#4296, @vaikas)
🐛 Fix bug
Dispatcher was incorrectly behaving like a normal reconciler instead of skipping status updates. I wonder if this was causing grief battling the normal reconciler. (#4280, @vaikas)
🐛 Fix bug
Fix issue #4375 where we would not reconcile changes to reconcile policy or duration. (#4405, @vaikas)
🐛 Fix bug
Only update the subscriber statuses in IMC after they have been added to handlers. Reduces failures where the
subscribers have been marked before the dataplane has been actually configured. (#4435, @vaikas)
🐛 Fix bug
Retry on network failures (#4454, @pierDipi)
🐛 Fix bug
ingress / filter now handle proper k8s lifecycle. (#3917, @vaikas)

🧹 Update or clean up current behavior
Move fuzzer (test related code) to test files so they don't get baked into our binaries. Small reduction in binary size. (#4399, @vaikas)
🧹 Update or clean up current behavior
DeliverySpec validation rejects a negative retry config. (#4216, @pierDipi)
🧹 Update or clean up current behavior
Just clean up some unused fields from the mtbroker reconciler struct. (#4318, @vaikas)
🧹 Update or clean up current behavior
Point to Broker ref instead of using a hard coded path. Also makes things little easier to reuse against other brokers. (#4278, @vaikas)
🧹 Update or clean up current behavior
Reducing places where we pull in fuzzers. (#4447, @vaikas)
🧹 Update or clean up current behavior
Simplify the IMC implementation, reduce churn due to global resyncs. (#4359, @vaikas)
🧹 Update or clean up current behavior
Use github action to run codecov. (#4237, @vaikas)
🧹 Update or clean up current behavior
remove all knative fuzzers from our binaries. (#4402, @vaikas)
🧹 Move ContainerSource to v1 API. (#4257, @eclipselu)

Config-br-defaults support setting delivery spec defaults (#4328, @runzexia)
Eventing now tests the supported Kubernetes version range pre-submit. (#4273, @mattmoor)
KnativeHistory extension is not added anymore to events going through channels (#4366, @slinkydeveloper)
Updated go-retryablehttp to v0.6.7 (#4423, @slinkydeveloper)