Knative Eventing release v0.3.0

Artifact	Description
eventing.yaml	Just the core knative/eventing components without Sources or ChannelProvisioners
in-memory-channel.yaml	Just the in-memory ChannelProvisioner
kafka.yaml	Just the Kafka ChannelProvisioner
release.yaml	Core components bundled with the in-memory ChannelProvisioner

Upgrade notes

• Knative Eventing now requires Kubernetes 1.11, and provides the
  /status subresource. This causes metadata.generation to behave
  like other Kubernetes objects.
• All conditions in Source statuses now have a Severity field
  indicating if the condition is terminal or non-terminal. See
  knative/serving#2394 (comment).

Eventing core

• Channels now create VirtualServices using generateName, which should
  prevent collisions with similarly-named objects from other types
  (such as Knative Services).
• Subscriptions now work with Knative 0.1 and 0.2.0 Services.
• Defined and documented the ability to select a default
  ClusterChannelProvisioner if one is not specified by the Channel.
• The legacy pre-0.2 routing resources have been removed.

In-memory channel

• No substantial changes.

Kafka channel

• Improved cleanup of finalizers to prevent Kafka channels from
  remaining stuck forever if provisioning fails.