Merge branch '3.0' into Ftr/proxy-service

.gitmodules

CHANGE.md

README.md

README_CN.md

cluster/cluster_impl/available_cluster_invoker_test.go

cluster/cluster_impl/base_cluster_invoker.go

cluster/cluster_impl/broadcast_cluster_invoker.go

cluster/cluster_impl/broadcast_cluster_invoker_test.go

cluster/cluster_impl/failback_cluster_invoker.go

cluster/cluster_impl/failback_cluster_test.go

cluster/cluster_impl/failfast_cluster_invoker.go

cluster/cluster_impl/failfast_cluster_test.go

cluster/cluster_impl/failover_cluster_invoker.go

cluster/cluster_impl/failover_cluster_test.go

cluster/cluster_impl/failsafe_cluster_invoker.go

cluster/cluster_impl/failsafe_cluster_test.go

cluster/cluster_impl/forking_cluster_test.go

cluster/cluster_impl/zone_aware_cluster_invoker.go

cluster/cluster_impl/zone_aware_cluster_invoker_test.go

cluster/directory/base_directory_test.go