Release v2.4.0

🚀 New Features

Thans to @XiXi-2024

• implement database iterator functionality (#326)

🎄 Enhancements

Thanks to @miaozw

• Add AscendKeysRange and DescendKeysRange functions (#323)

Thans to @XiXi-2024

• Add unit tests for AscendKeysRange and DescendKeysRange methods (#324)

🐞 Bug Fixes

Thanks to @auula

• fix: inner error bug in the delete expired key method. (#322)