Merge pull request qiniu#33 from qiniu/develop

Release v6.0.4

Merge pull request qiniu#32 from qiniu/develop

Release v6.0.3

Merge pull request qiniu#31 from qiniu/develop

Release v6.0.2

Merge pull request qiniu#30 from qiniu/develop

Release v6.0.1

Merge pull request qiniu#29 from qiniu/develop

Release v6.0.0 (patch 2)

Merge pull request qiniu#26 from qiniu/develop

Update CHANGELOG.md

Merge pull request qiniu#23 from qiniu/develop

Update README.md

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Merge pull request qiniu#14 from xushiwei/feature/v1.0.0

resumable put