Function lower_bound

src/toml.hpp:7913–7920

#if TOML_ENABLE_WINDOWS_COMPAT

		TOML_NODISCARD
		iterator lower_bound(std::wstring_view key)
		{
			if (empty())
				return end();

			return lower_bound(impl::narrow(key));
		}

		TOML_NODISCARD
		const_iterator lower_bound(std::wstring_view key) const