9.3.0

What's Changed

• Update hostbrowser to only poll audio hosts (#549) @emontnemery
• Bump flake8 from 4.0.0 to 4.0.1 (#548) @dependabot
• Bump pylint from 2.10.2 to 2.11.1 (#536) @dependabot
• Prepare for pylint 2.11 (#547) @emontnemery
• Bump flake8 from 3.9.2 to 4.0.0 (#546) @dependabot
• Increase timeout for HostBrowser's polling (#542) @emontnemery
• Revert "Block JBL devices from host based polling" (#544) @emontnemery
• Block JBL devices from host based polling (#543) @emontnemery
• Fix bug in discovery when a device does not return multizone status (#541) @emontnemery
• Remove unused Event from ReceiverController (#534) @emontnemery
• Remove spotify controller (#535) @emontnemery