• Add credentials.createFromSecureContext, as described in gRFC L93 (#1988)
• Set provided serviceName as property of generated Client subclasses (#1993 contributed by @DavyJohnes)
• Return never from functions that always throw (#2056 contributed by @dacioromero)
• Add experimental Outlier Detection load balancing policy, as described in gRFC A50 (disabled by default, enabled by setting the environment variable GRPC_EXPERIMENTAL_ENABLE_OUTLIER_DETECTION=true) (#2058)
• Expose MetadataOptions interface (#2071 contributed by @kskalski)
• Surface stream writing errors as standard gRPC errors (#2073)