Tolerable logging
Current (1d7fe705) "logging" is a printf-based (and printf-friends-based) spaghetti soup.
As neither the C++ language nor its standard API manages logging decently, an external lib should be used.
- blackhole is sexy (structured!) but requires an old boost — while batsched probably needs a recent one
- Boost.LogV2. meh. not feeling like templated templates of variadic templates would do any good to batsched.
- sog: could not compile it (despite qbs, bazel and a bazel-based nix recipe) :(
- loguru is simple and seems to work. Not structured but this is still (way) better than current soup.