A modern formatting library for C++

Varargs are a poor choice for modern formatting API: 1. Manual type management 2. Don't play well with positional arguments due to lack of random access 3. Suboptimal code generation on x86-64 4. Non-inlinable causing with (3) small but noticeable (few %) overhead on simple in-memory formatting We can do better with variadic templates! 18 ................
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