DOC: Update CHANGELOG after mering #774 [skip ci]

Author: NickleDave

doc/CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+### Fixed
+- Make fixes to `FrameClassificationModel` so it works with `BioSoundSegBench` dataset
+  [#774](https://github.com/vocalpy/vak/pull/774).
+  Fixes [#767](https://github.com/vocalpy/vak/issues/767)
+
 ## 1.0.1
 ### Changed
 - Require Python version >= 3.10