* Added metrics for `oldestLogAge` and `lastRestoreDuration` to monitor capacity issues that can cause unrecoverable cluster failure [[GH-452](https://github.com/hashicorp/raft/pull/452)][[GH-454](https://github.com/hashicorp/raft/pull/454/files)]
* Made `TrailingLogs`, `SnapshotInterval` and `SnapshotThreshold` reloadable at runtime using a new `ReloadConfig` method. This allows recovery from cases where there are not enough logs retained for followers to catchup after a restart. [[GH-444](https://github.com/hashicorp/raft/pull/444)]
* Inclusify the repository by switching to main [[GH-446](https://github.com/hashicorp/raft/pull/446)]
* Add option for a buffered `ApplyCh` if `MaxAppendEntries` is enabled [[GH-445](https://github.com/hashicorp/raft/pull/445)]
* Add string to `LogType` for more human readable debugging [[GH-442](https://github.com/hashicorp/raft/pull/442)]
* Extract fuzzy testing into its own module [[GH-459](https://github.com/hashicorp/raft/pull/459)]
BUG FIXES
* Update LogCache `StoreLogs()` to capture an error that would previously cause a panic [[GH-460](https://github.com/hashicorp/raft/pull/460)]
* Allow futures to react to `Shutdown()` to prevent a deadlock with `takeSnapshot()` [[GH-390](https://github.com/hashicorp/raft/pull/390)]
* Prevent non-voters from becoming eligible for leadership elections [[GH-398](https://github.com/hashicorp/raft/pull/398)]
* Remove an unneeded `io.Copy` from snapshot writes [[GH-399](https://github.com/hashicorp/raft/pull/399)]
* Log decoded candidate address in `duplicate requestVote` warning [[GH-400](https://github.com/hashicorp/raft/pull/400)]
* Prevent starting a TCP transport when IP address is `nil` [[GH-403](https://github.com/hashicorp/raft/pull/403)]
* Reject leadership transfer requests when in candidate state to prevent indefinite blocking while unable to elect a leader [[GH-413](https://github.com/hashicorp/raft/pull/413)]
* Add labels for metric metadata to reduce cardinality of metric names [[GH-409](https://github.com/hashicorp/raft/pull/409)]
* Improve FSM apply performance through batching. Implementing the `BatchingFSM` interface enables this new feature [[GH-364](https://github.com/hashicorp/raft/pull/364)]
* Add ability to obtain Raft configuration before Raft starts with GetConfiguration [[GH-369](https://github.com/hashicorp/raft/pull/369)]
IMPROVEMENTS
* Remove lint violations and add a `make` rule for running the linter.
* Replace logger with hclog [[GH-360](https://github.com/hashicorp/raft/pull/360)]
* Read latest configuration independently from main loop [[GH-379](https://github.com/hashicorp/raft/pull/379)]
BUG FIXES
* Export the leader field in LeaderObservation [[GH-357](https://github.com/hashicorp/raft/pull/357)]
* Fix snapshot to not attempt to truncate a negative range [[GH-358](https://github.com/hashicorp/raft/pull/358)]
* Check for shutdown in inmemPipeline before sending RPCs [[GH-276](https://github.com/hashicorp/raft/pull/276)]
v1.0.0 takes the changes that were staged in the library-v2-stage-one branch. This version manages server identities using a UUID, so introduces some breaking API changes. It also versions the Raft protocol, and requires some special steps when interoperating with Raft servers running older versions of the library (see the detailed comment in config.go about version compatibility). You can reference https://github.com/hashicorp/consul/pull/2222 for an idea of what was required to port Consul to these new interfaces.
v0.1.0 is the original stable version of the library that was in main and has been maintained with no breaking API changes. This was in use by Consul prior to version 0.7.0.
