2.0.0 Release Candidate

YouTubeKit's V2 version is finally here!

New:

• A new validators system for the data of the requests
• A new logger system to allow active debugging at runtime

Changed:

• Instead of tuples, YouTubeKit is now using the Result and async/throws APIs
• Errors are now clearer
• Switched to MIT licence.

Full Changelog: v1.3.0...v2.0.0-rc