Merge pull request #57 from sendbird/release/4.19.8

Release 4.19.8

Merge pull request #55 from sendbird/release/4.19.7

Release 4.19.7

Merge pull request #54 from sendbird/release/4.19.6

Release 4.19.6

Merge pull request #53 from sendbird/release/4.19.5

Release 4.19.5

Merge pull request #52 from sendbird/release/4.19.4

Release 4.19.4

Merge pull request #51 from sendbird/release/4.19.3

Release 4.19.3

Release 4.12.3-privacy

Merge pull request #50 from sendbird/release/4.19.2

Release 4.19.2

Merge pull request #47 from sendbird/release/4.19.1

Release 4.19.1