Package base provides base config for go-cqhttp.

Package cache impl the cache for gocq.

Package download provide download utility functions.

Package mime 提供MIME检查功能.

Package msg 提供了go-cqhttp消息中间表示，CQ码处理等等.

Package param provide some util for param parse.

Package selfdiagnosis 自我诊断相关.

Package selfupdate 版本升级检查和自更新.