changelog: Add track number change

Author: Serial-ATA

CHANGELOG.md

@@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.22.1] - 2024-01-11
+
+### Changed
+- **VorbisComments**: Support `TRACKNUMBER` fields with the `current/total` format. ([issue](https://github.com/Serial-ATA/lofty-rs/issues/493)) ([issue](https://github.com/Serial-ATA/lofty-rs/issues/499)) ([PR](https://github.com/Serial-ATA/lofty-rs/pull/500))
+  - These fields will now properly be split into `TRACKNUMBER` and `TRACKTOTAL`, making it possible to use them with 
+    [Accessor::track()](https://docs.rs/lofty/latest/lofty/tag/trait.Accessor.html#method.track) and [Accessor::track_total()](https://docs.rs/lofty/latest/lofty/tag/trait.Accessor.html#method.track_total).
+
 ## [0.22.0] - 2024-01-05
 
 ### Added