update(1.16): update mod version

fix(1.12): fix an issue that low version MySQL don't support null tim…

…estamp fields.

doc(1.16): update 1.16 README.md

feat(1.20): completely update to 1.20.2

feat(1.16): add config pre-reload message.

[feat]Update README.md

Merge pull request #4 from Lileep/dev

feat(update): prepare 1.4 update

Merge pull request #3 from Lileep/dev

 feat(update): prepare 1.3 update

Update img url in README.md

Update README.md