Merge pull request #1481 from VisActor/release/0.20.8

[Auto release] release 0.20.8

Merge pull request #1474 from VisActor/release/0.20.7

[Auto release] release 0.20.7

Merge pull request #1471 from VisActor/release/0.20.6

[Auto release] release 0.20.6

Merge pull request #1453 from VisActor/release/0.20.5

[Auto release] release 0.20.5

Merge pull request #1441 from VisActor/release/0.20.4

[Auto release] release 0.20.4

Merge pull request #1429 from VisActor/release/0.20.3

[Auto release] release 0.20.3

Merge pull request #1406 from VisActor/release/0.20.1

[Auto release] release 0.20.1

Merge pull request #1381 from VisActor/release/0.20.0

[Auto release] release 0.20.0

Merge pull request #1373 from VisActor/release/0.19.24

[Auto release] release 0.19.24

Merge pull request #1346 from VisActor/release/0.19.23

[Auto release] release 0.19.23