Add macro to declare SFINAE based traits
Add macro to declare SFINAE based traits

emil-e/rapidcheck,unapiedra/rapidfuzz,tm604/rapidcheck,emil-e/rapidcheck,whoshuu/rapidcheck,tm604/rapidcheck,tm604/rapidcheck,emil-e/rapidcheck,whoshuu/rapidcheck,whoshuu/rapidcheck,unapiedra/rapidfuzz,unapiedra/rapidfuzz