Merge pull request qiniu#126 from qiniu/develop

Release 6.1.8

Merge pull request qiniu#123 from qiniu/develop

Release 6.1.7

Merge pull request qiniu#118 from qiniu/develop

Release 6.1.6

Merge pull request qiniu#105 from qiniu/develop

Release 6.1.5

Merge remote-tracking branch 'origin/develop'

Merge pull request qiniu#77 from qiniu/develop

Release v6.1.3

Update CHANGELOG.md

Merge pull request qiniu#60 from qiniu/develop

Release v6.1.1

Merge pull request qiniu#58 from qiniu/develop

Release v6.1.0

Merge pull request qiniu#51 from qiniu/develop

Release v6.0.1 (patch)