rumqttd 0.12.2

Significant changes

• Add AlertLink to get alerts about router events (#538)
• Add basic username and password authentication (#553)
• Don't allow client's with empty client_id (#546)
• Disconnect existing client on a new connection with similar client_id (#546)
• Skip client certificate verification when using native-tls because it doesn't support it (#550)

What's Changed

• doc: Instructions for updating log filters via console by @swanandx in #551
• fix: change panic to warn in debug mode by @henil in #547
• fix(router): Disconnect existing client on a new connection with same client_id and don't allow empty client_id by @henil in #546
• fix(log): show organization name (tenant_id) in connect and disconnect log messages by @henil in #549
• fix: native-tls doesn't support client certificate verification so skip it by @henil in #550
• fix(build): remove implicit features by @henil in #554
• chore(build): Update Cargo.lock file and use correct version of tokio by @henil in #555
• feat(rumqttd): add support for username and password in broker by @henil in #553
• feat(link): Add AlertLink to get alerts about router events by @henil in #538

Full Changelog: R19...rumqttd-0.12.2