* Add Matrix link to REAME

Signed-off-by: Ritchie Frodomar <alkalinethunder@gmail.com>

* Fix regressions after porting to SDL3

Signed-off-by: Ritchie Frodomar <alkalinethunder@gmail.com>

* Port to SDL3

Signed-off-by: Ritchie Frodomar <alkalinethunder@gmail.com>