As an ongoing effort to provide a top notch quality anticheat client for the vast number of tournaments and professional competitions, I reworked the build system (aka Makefile) of Sauerbraten, and ported the SVN codebase to SDL2.
The poor man's description of SDL2 is "better and moar stuff". For the developer, this means that the fate of Sauerbraten is no more tied to SDL1, which is already dead.
This should be regarded as a beta release: SDL2 changes a lot of stuff in input and windows management, and this could lead to nice new stuff but also brokenness. The principal reason to release this is to have a larger testing by the community. Please read the instructions on the github repo for more info.
The repo includes both the source and binaries for Windows, Linux and Mac (>=10.5, Intel 64 bit, basically all hardware sold from 2007).