Changelog

• Remove extra stat object calls. (#405) (04/30/20) (Nathan Brown)
• Fix docs for SetPolicyAsync API (#404) (04/30/20) (poornas)
• Validate bucket name in BucketExistsAsync call (#403) (04/30/20) (poornas)
• Fix: Use typed exceptions for minio client (#398) (04/30/20) (ig-sinicyn)
• removed double-encoding of url query parameters (#401) (04/29/20) (Willi Eggeling)
• Retry policy callback for the MinioClient (#392) (04/23/20) (ig-sinicyn)
• Improve region matching regex performance (fixes #393) (#394) (04/19/20) (Johan Geluk)