A couple minor changelog additions for 0.0.16 release

A few short changelog entries for the next release to include:

* #137
* #138
* #140

CHANGELOG.md

@@ -7,12 +7,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.0.16] - 2024-01-06
+
+### Changed
+
+- Calls to `Stop` error if the client hasn't been started yet. [PR #138](https://github.com/riverqueue/river/pull/138).
+
+### Fixed
+
+- Fix typo in leadership resignation query to ensure faster new leader takeover. [PR #134](https://github.com/riverqueue/river/pull/134).
+- Elector now uses the same `log/slog` instance configured by its parent client. [PR #137](https://github.com/riverqueue/river/pull/137).
+- Notifier now uses the same `log/slog` instance configured by its parent client. [PR #140](https://github.com/riverqueue/river/pull/140).
+
 ## [0.0.15] - 2023-12-21
 
 ### Fixed
 
 - Ensure `ScheduledAt` is respected on `InsertManyTx`. [PR #121](https://github.com/riverqueue/river/pull/121).
-- Fix typo in leadership resignation query to ensure faster new leader takeover. [PR #134](https://github.com/riverqueue/river/pull/134).
 
 ## [0.0.14] - 2023-12-13