v2.2.4
Feature:
- cryptor package: add base64 support for md5, hmac, sha encrypt functions.
- datetime package: add NowDateOrTime, Timestamp, TimestampMilli, TimestampMicro, TimestampNano.
- maputil package: add ConcurrentMap, HasKey.
- slice package: add Join.
- pointer package: add UnwarpOr, UnwarpOrDefault.
Fix:
- fileutil package: Fix bug of CreateDir.