pypi: prod/stable dev status

Author: phette23

pyproject.toml

@@ -9,7 +9,7 @@ homepage = "https://github.com/phette23/marcgreppy"
 repository = "https://github.com/phette23/marcgreppy"
 keywords = ["marc", "grep", "regex", "libraries", "cli", "metadata", "bibliographic", "cataloging"]
 classifiers = [
-    "Development Status :: 4 - Beta",
+    "Development Status :: 5 - Production/Stable",
     "Environment :: Console",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",