Enable exhaustive-match Mypy error code (#86)

Author: johnthagen

pyproject.toml

@@ -51,7 +51,7 @@ default-groups = "all"
 [tool.mypy]
 ignore_missing_imports = true
 strict = true
-enable_error_code = ["deprecated", "explicit-override"]
+enable_error_code = ["deprecated", "exhaustive-match", "explicit-override"]
 
 
 [tool.ruff]