update changelog

Author: tfeldmann

CHANGELOG.md

@@ -17,6 +17,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   ([#527](https://github.com/PyFilesystem/pyfilesystem2/pull/527)).
 - Mark `fs.zipfs.ReadZipFS` as a case-sensitive filesystem
   ([#527](https://github.com/PyFilesystem/pyfilesystem2/pull/527)). 
+- Optimized moving files between filesystems with syspaths.
+  ([#523](https://github.com/PyFilesystem/pyfilesystem2/pull/523)).
+- Fixed `move.move_file` to clean up the copy on the destination in case of errors.
 
 
 ## [2.4.15] - 2022-02-07