Merge pull request #2 from ckerr/fix/iwyu-numeric-limits

fix: add <limits> to long_math.h for std::numeric_limits

Author: devatrun

include/slimcpplib/long_math.h

@@ -37,6 +37,7 @@
 #include <cstdint>
 
 #include <array>
+#include <limits>
 #include <optional>
 #include <type_traits>