v0.5.0-alpha.2 - added optional proxy fallback to discovery mode. This is enabled by default but can be configured with the `-discovery-fallback` flag. - add further extensive Raft tests based on section 5.3 and 5.4 in the Raft paper - new Advance interface to raft.Node to correctly notify the node when entries have been applied - etcdctl now syncs before running member subcommands - etcdctl now supports tls with the `--ca-file`, `--cert-file` and --key-file` flags - etcdctl now has a backup command to save a copy of an etcd data directory - etcd now has a `-force-new-cluster` flag to use when restoring from a backup - expanded and clarified clustering documentation - WAL now syncs before returning from create - listen ports are initialized before starting the etcd server - when adding a member to a cluster, etcd now verifies that the given peer URLs are not already assigned to a member - exposed `discovery-proxy` flag (equivalent to the ETCD_DISCOVERY_PROXY environment variable) - setting flags from environment variables no longer potentially causes a panic - `EcodePrevValueRequired` is returned where appropriate - all errors returned to clients are now JSON formatted - all responses to clients should now have application/json Content-Type Thank you to: Åsmund Grammeltvedt, Ben Darnell, Brandon Philips, Brian “What” Waldon, Jonathan “Bool” Boulle, Kelsey Hightower, Xiang Li, Yicheng Qin