1.0.81 release notes

Author: mgravell

docs/releasenotes.md

@@ -1,6 +1,6 @@
 # Release Notes
 
-## 1.0.79
+## 1.0.81
 
 - support `CancellationToken` in service signatures in place of `CallContext` (#95)
 - service discovery correctly considers method accessibility (#87)
@@ -10,6 +10,7 @@
 - addition of [`ClientFactory`](https://www.nuget.org/packages/protobuf-net.Grpc.ClientFactory) support
 - improvements to streaming (client/server/duplex) orchestration
 - improvements to metadata (headers/trailers) collection
+- update gRPC references
 
 ## 1.0.21 - 1.0.37