Release 2.4.0

• disable Expect: 100-continue
• support getBucketInfo
• support getBucketStat
• support bucket policy
• support bucket encryption
• support bucket tagging
• support bucket worm
• support versioning
• support request payment
• support object tagging
• support code archive
• support process object
• support traffic limit parameter
• support upload object from file handle
• support getSimplifiedObjectMeta
• fixed the object name can not be '0' stirng.
• endpoint validity check
• add new pre-signed url api