Add mp_min_element_q, mp_max_element_q

include/boost/mp11/detail/mp_min_element.hpp

@@ -29,6 +29,7 @@ template<template<class...> class P> struct select_min
 } // namespace detail
 
 template<class L, template<class...> class P> using mp_min_element = mp_fold_q<mp_rest<L>, mp_first<L>, detail::select_min<P>>;
+template<class L, class Q> using mp_min_element_q = mp_min_element<L, Q::template fn>;
 
 // mp_max_element<L, P>
 namespace detail
@@ -42,6 +43,7 @@ template<template<class...> class P> struct select_max
 } // namespace detail
 
 template<class L, template<class...> class P> using mp_max_element = mp_fold_q<mp_rest<L>, mp_first<L>, detail::select_max<P>>;
+template<class L, class Q> using mp_max_element_q = mp_max_element<L, Q::template fn>;
 
 } // namespace mp11
 } // namespace boost