bump version to 0.2.1

Author: brunodantas

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "django-returns"
-version = "0.2.0"
+version = "0.2.1"
 description = "Meaningful Django utils based on Functional Programming"
 readme = "README.md"
 license = { file = "LICENSE" }