update changelog

Author: RonnyPfannschmidt

CHANGELOG.rst

@@ -4,6 +4,12 @@ In progress
 * fix #587: don't fail file finders when distribution is not given
 * fix #524: new parameters ``normalize`` and ``version_cls`` to customize the version normalization class.
 * fix #585: switch from toml to tomli
+* fix #591: allow to opt in for searching parent directories in the api
+* fix #589: handle yaml encoding using the expected defaults
+* fix #575: recommend storing the version_module inside of ``mypkg/_version.py``
+* fix #571: accept branches starting with ``v`` as release branches
+* fix #557: Use ``packaging.version`` for ``version_tuple``
+* fix #544: enhance errors on unsupported python/setuptools versions
 
 v6.0.1
 =======