Bump classifier

Author: Uğur Özyılmazel

setup.py

@@ -22,7 +22,7 @@
         'development': ['vb-console'],
     },
     classifiers=[
-        'Development Status :: 3 - Alpha',
+        'Development Status :: 5 - Production/Stable',
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 3',