Release Nimble v9 for bumping Swift version requirement (to 5.2) and adjust the deprecation roadmap

[ikesyo]

Refs:

• [Proposal] Release Nimble v8 for bumping Swift version requirement (to 4.2) and adjust the deprecation roadmap #623
• throwAssertion isn't available for any project using SwiftPM #674
• Update CwlPreconditionTesting to 2.0.0-beta.1 #681

[danielsaidi]

Any idea when this could be released? Would adding more maintainers help? I'd be happy to help in any way I can, since discussions regarding critical errors go uncommented and prs are not merged.

[ikesyo]

Just published v9.0.0-beta.1.

[ikesyo]

v9.0.0-beta.2 was released on May 16.

[ikesyo]

v9.0.0-beta.3 has been released.