Unauthenticated access, retry logic, socket.io bump

What's Changed

• Unauthenticated users to see the content of a whiteboard in a public space by @hero101 in #47
• Socket io bumped to 4.8.1 by @hero101 in #48
• Retry strategy by @hero101 in #49

Full Changelog: v0.5.2...v0.6.0