Release v1.3.9

What's Changed

• Optim main function by @SWHL in #137
• Support Pillow version up to 10.0.1 by @debanjum in #139
• Fix wrong processing if character map path is given by @theikkila in #141

New Contributors

• @debanjum made their first contribution in #139
• @theikkila made their first contribution in #141

Full Changelog: v1.3.8...v1.3.9