raft-0.22.0-bp156.1.1

- raft 0.22.0 - new upstream https://github.com/cowsql/raft
  This version is is a drop-in replacement of canonical/raft up to
  0.18.0
- contains improvements to the raft implementation in the
  replication and leader election code, a legacy shim for the v1
  API (disabled), test improvements and developer visible changes

- raft 0.18.1:
  * final release of this project, will be discontinued and
    incorporated into dqlite
  * developer visible changes and bug fixes

- raft 0.18.0:
  * bug fixes and developer visible refactorings

- raft 0.17.1:
  * not API compatible
  * Correct quorum calculation that determines when it's safe to
    apply a log entry
  * Ensuring that a "known good" configuration is always available
    to roll back to when a new configuration can't be committe
  * Fix potential crashes when a Raft state transition occurs
    during an asynchronous operation like writing to disk.

- raft 0.16.0:
  * support for hostnames
  * bug fixes

- raft 0.15.0:
  * raft_io version 2 introducing async_work
  * raft_fsm version introducing snapshot_async
  * disable failing test for libuv 1.44.2 and higher

- raft 0.14.0:
  * Support for automated recovery of corrupt segments upon startup
  * Bug fixes and developer visible changes

- raft 0.13.0:
  * move to raft_fsm v2 introducing snapshot_finalize

- raft 0.11.3:
  * initial support for tracing
  * protocol bug fixes

- raft 0.11.2:
  * set start_index correctly when no closed segments are present
  * uv_segment code correctnes fixes
  * replication: do not send snapshots to offline nodes

- raft 0.11.1:
  * libuv implementation will use lz4 to compress snapshots
  * minor bug fixes

- raft 0.10.1:
  * Add raft_set_initial_shapshot_timeout to API

- raft 0.9.25:
  * Add APIs to configure timeouts when promoting a stand-by
  * Improve detection of the version of the ZFS kernel module
  * Honor endianness when decoding test FSM commands

- raft 0.9.24:
  * updates to tests

- raft 0.9.23:
  * Disable async for UBIFS
  * Reset vote when converting to candidate and starting a prevote round
  * use internal configuration APIs in uv module

- raft 0.9.22:
  * various raft protocol fixes