v0.3.11

What's Changed

• Feat/contract index by @imotai in #499
• clean doc id ownership entry when delete doc id by @jingchen2222 in #500
• add admin permission controller by @imotai in #501
• update the sdk return obj by @imotai in #502
• Update README.md by @imotai in #504
• Feat/docker by @imotai in #503
• Feat/docker by @imotai in #505
• Feat/docker by @imotai in #506
• Update README.md by @imotai in #507
• Update README.md by @imotai in #508
• Feat/docker by @imotai in #509

Full Changelog: v0.3.9...v0.3.11