I stopped updating the compiler at 0.14 for three projects. Getting the correct toolchain is part of my (incremental) build process. I don't use any external Zig packages.

I think one of the more PITA changes necessary to get these projects to 0.15 is removing `usingnamespace`, which I've used to implement a kind of mixin. The projects are all a few thousand LOC and it shouldn't be that much trouble, but enough trouble that none of what I gain from upgrading currently justify doing it. I think that's fine.