Does not work with recent versions of fmtlib

[fivethousand]

ArgList does not exist any more in recent versions of fmtlib leading to the obvious compiler error

'fmt::ArgList' has not been declared

when LOGURU_USE_FMTLIB is enabled.

[emilk]

I think I might rework the fmtlib implementation at some point to have it use a specific suffix like this:

LOG_F(INFO, "Hello %s", "world");
LOG_S(INFO) << "Hello " << "world";
LOG_FMT(INFO, "Hello {}", "world");

when I do that, I will make sure it works with the latest fmtlib.

[Milerius]

Any news ? still not working :(-