Hi,

I'm planning to transition to SFML 3.0 soon. As a major release it
contains some API changes which will require changes to extremetuxracer.

I've pushed a branch to salsa which ports the game to SFML 3.0 here:
https://salsa.debian.org/games-team/extremetuxracer/-/commits/sfml3

The patch also contains some changes to make etr build with C++17
(required by SFML 3).

The patch is quite large, but I think this is the best way. I don't want
to hold Debian back from having SFML 3 and I don't want to keep SFML 2
around now that upstream have abandoned it.

Without objection I plan to team upload this once the transition starts.

Thanks,
James