changelog: update before release (envoyproxy#434)

docs: update changelog (envoyproxy#377)

Signed-off-by: Kuat Yessenov <[email protected]>

docs: update changelog (envoyproxy#361)

Signed-off-by: Kuat Yessenov [email protected]

update protobuf to v1.4.2 and grpc to v1.27.0 (envoyproxy#322)

* update protobuf to v1.4.2

Signed-off-by: Kuat Yessenov <[email protected]>

* grpc v1.27.0

Signed-off-by: Kuat Yessenov <[email protected]>

Add v3 xds/ads Integration tests (envoyproxy#285)

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Signed-off-by: go-control-plane(CircleCI) <[email protected]>

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Signed-off-by: go-control-plane(CircleCI) <[email protected]>

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Signed-off-by: go-control-plane(CircleCI) <[email protected]>

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Signed-off-by: go-control-plane(CircleCI) <[email protected]>

Transition to use golang/protobuf to support automated code generation (

envoyproxy#226)