Release v0.4.2

📚 Documentation

• update README.md by @SWHL in 95556b1
• update README by @SWHL in 07c9733

⚙️ Miscellaneous Tasks

• remove numpy version upper bound in requirements.txt by @Connor_Zhang in 9b724c2
• update cfg of version by @SWHL in 8f45590

🎉 Contributors

• @SWHL
• @miss85246
• @cloudy-sfu