serf: Adding snapshot path to config
serf: Adding ability to snapshot and restore
serf: Snapshot stores the member clock as well
serf: Wait for snapshoter to finish before shutdown
serf: When attempting rejoin, do not connect to ourself
serf: Snapshot should sync before closing the file
serf: Adding tests for the snapshot
serf: testing snapshot based recovery
serf: testing that we do not rejoin a cluster after a leave
serf: snapshoter -> snapshotter
serf: adding some comments to the snapshotter
Merge pull request #86 from hashicorp/f-snapshot

Adding support for a state snapshot mechanism