Make v4.0.0 stable release

[are]

feat: add PAM v3 support

Adds PAM v3 support with grantToken and setToken.

fix: change subscribe loop to no longer throw

Subscribe loop no longer throws on unrecoverable failure, instead waits for restart.

Closes #63

feat: add restore method to subscription

After subscribe loop fails, call restore to restart it.

fix: add more specific diagnostics

Adds more diagnostics for network module.

Closes #65

fix: change whenStarts to stream

WhenStarts future no longer throws and is now based on a stream.

Closes #64

fix: release resources on failure

Networking should now release all resources after a failure.

Closes #62

fix: Signature mismatch issue.

Fixes issue of Signature mismatch with PAM enabled keysets.

Closes #50

fix: Message decryption failure in subscribe.

Fixes issue of message decryption with subscription.

Closes #46

[parfeon]

Let me check it once again :D

[mohitpubnub]

@are Does updated PR comment cover all the changes appropriately!!?

[are]

@are Does updated PR comment cover all the changes appropriately!!?

Yes! Excellent work on this!

[parfeon]

@client-engineering-bot release dart as v4.0.0

[github-actions[bot]]

🚀 Release successfully completed 🚀