Kotoba 3.1.3

• Minor fix on the usage of re

Kotoba 3.1.2

• Update the CI/CD setup.
• Resolved the warnings when the code uses a normal (unicode) string, e.g., 'normal string', instead of a raw string, e.g., r'raw string'.

Kotoba 3.1.0

Support using Level-3 CSS selectors with JSON object.

Note: The wildcard does not work with JSON object.