V1.6.0

This release includes below features and fixes:
Notable changes:

#231 feat: off-chain-auth simplification
#232 feat: add MonthlyFreeQuota in QuotaInfo
#228 feat: provide APIs for delegate upload and update
#233 feat: add SetBucketFlowRateLimit
#235 feat: delegate create folder
#225 fix: remove create object & bucket approval