Bump development status to beta

Author: 5roop

pyproject.toml

@@ -10,7 +10,7 @@ description = "Adapted Stanford NLP Python Library with improvements for specifi
 readme = "README.md"
 requires-python = ">=3.7"
 classifiers = [
-    'Development Status :: 3 - Alpha',
+    'Development Status :: 4 - Beta',
 
     'Intended Audience :: Developers',
     'Intended Audience :: Education',