Prepare 0.2.1 (#7)

Author: avvertix

setup.py

@@ -10,7 +10,7 @@
 
 setup(
     name='parse-document-model',
-    version='0.2.0',
+    version='0.2.1',
     description='Pydantic models for representing a text document as a hierarchical structure.',
     long_description=long_description,
     long_description_content_type='text/markdown',