Support arbitrary image extensions in formats (changelog) (#173)

* update changelog

CHANGELOG.md

@@ -8,10 +8,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 ### Added
+- OpenVINO plugin examples (<https://github.com/openvinotoolkit/datumaro/pull/159>)
 - Dataset validation for classification and detection datasets (<https://github.com/openvinotoolkit/datumaro/pull/160>)
+- Arbitrary image extensions in formats (import and export) (<https://github.com/openvinotoolkit/datumaro/issues/166>)
+- Ability to set a custom subset name for an imported dataset (<https://github.com/openvinotoolkit/datumaro/issues/166>)
 
 ### Changed
--
+- Common ICDAR format is split into 3 sub-formats (<https://github.com/openvinotoolkit/datumaro/pull/174>)
 
 ### Deprecated
 -
@@ -21,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - The ability to work with file names containing Cyrillic and spaces (<https://github.com/openvinotoolkit/datumaro/pull/148>)
+- Image reading and saving in ICDAR formats (<https://github.com/openvinotoolkit/datumaro/pull/174>)
 
 ### Security
 -