v0.21.2

Works with https://github.com/temporalio/temporal/releases/tag/v0.21.1 server release.

Works with service release 0.21.1

Service 0.21.1 has an explicit check that Java SDK has to be at most v0.20.
This release is a workaround for customers that are still on 0.21.1 service.

Initial Alpha Release

Alpha release of Temporal Java SDK.