v0.3.1

What's Changed

• Develop by @chiaweh2 in #4
• fix bug in gha for doc build by @chiaweh2 in #5
• fix document error by @chiaweh2 in #6
• update workflow by @chiaweh2 in #7
• include env for github page by @chiaweh2 in #8
• include the pip install -e by @chiaweh2 in #9
• Develop by @chiaweh2 in #10
• fix class name in api reference by @chiaweh2 in #11

Full Changelog: v0.2.2...v0.3.1