Update metadata to support Python 3.10.

methane · methane · commit f837c5e00df1 · 2021-10-19T15:59:17.000+09:00
diff --git a/metadata.cfg b/metadata.cfg
@@ -24,6 +24,7 @@ classifiers:
         Programming Language :: Python :: 3.7
         Programming Language :: Python :: 3.8
         Programming Language :: Python :: 3.9
+        Programming Language :: Python :: 3.10
         Topic :: Database
         Topic :: Database :: Database Engines/Servers
 py_modules:
