v0.8.0-rc2

The working group expects that this release candidate is quite close to the final
v0.8.0 release. However, breaking API changes are still possible.

This release candidate is suitable for implementors, but the working group does
not recommend shipping products based on a release candidate API due to the
possibility of incompatible changes prior to the final release. The following
represents the changes since v0.8.0-rc1:

Changes by Kind

Validation

• Add CEL validation for GRPCRoute. (#2305, @gnossen)
• HTTPRoute and GRPCRoute CRDs now provide built-in validation that ensures the
  uniqueness of names in Header Modifier "Remove" lists. (#2306, @robscott)

Bug Fixes

• GRPCRoute: The default match has been removed as it was invalid (it only
  specified a type of "Exact" without a corresponding Service or Method). Note
  that the match type still defaults to "Exact". (#2311, @gauravkghildiyal)

Spec Clarifications

• RequestMirrorFilter: Enhanced the doc string to be explicit about sending the
  mirrored request to a single destination endpoint within the backendRef
  specified. (#2317, @arkodg)
• Resources no longer have support levels, implementations can choose to support
  whichever set of resources they want (#2323, @robscott)

Conformance

• Better support mesh-only conformance testing (#2312, @kflynn)
• SupportedFeatures have been restructured to be per-resource (#2323, @robscott)

New Contributors

• @whitneygriffith made their first contribution in #2301
• @uucloud made their first contribution in #2308
• @caroltyk made their first contribution in #2291

Full Changelog: v0.8.0-rc1...v0.8.0-rc2