Update setup.py

Author: datsom1

setup.py

@@ -33,7 +33,7 @@ def get_long_description():
     url="https://github.com/datsom1/db-diff",
     python_requires=">=3.6",
     classifiers=[
-        "Development Status :: 4 - Beta",
+        "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
         "Intended Audience :: Science/Research",
         "Intended Audience :: End Users/Desktop",