Version 3 is a major new release. It introduces improvements in the event handling, richer support for more keys and modifier reports, more functionality out of the box, desktop notification support, simpler APIs for emitting strings directly to the screen, and numerous bug fixes.

Every Tcell version 2 application will need some modifications to work with Tcell version 3. See the CHANGESv3.md document for more information.

Full Changelog: https://github.com/gdamore/tcell/compare/v2.13.0...v3.0.0