- Fix a minor voting issue in raft. Under unique scenarios it was possible that two nodes in a raft cluster could be elected leader for a specific term. - Fix unexpected HTTPS to HTTP downgrade when TLS certs and keys are not provided. - Fix an early file unlock issue in WAL. This fix was done to improve safety of the etcd WAL implementation in preparation for the etcd 2.1.0 release. - Fix frequent i/o timeout issues during peer communication. - Improved documentation around setting up an etcd cluster.