Bump version to 0.21.0

Author: bjmorgan

docs/changelog.rst

@@ -4,6 +4,9 @@ Changelog
 Unreleased
 ----------
 
+0.21.0
+------
+
 - **Breaking:** Projection mode is now selected with a single
   :attr:`~hofmann.ViewState.projection` field taking
   :class:`~hofmann.Orthographic` (the default) or

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "hofmann"
-version = "0.20.0"
+version = "0.21.0"
 description = "A modern Python reimagining of the XBS ball-and-stick crystal structure viewer"
 readme = "README.md"
 requires-python = ">=3.11"