Can now pass a collection of callables and even a generator that push callable in the 'validate' parameter.
Can now pass a collection of callables and even a generator that push callable in the 'validate' parameter.

mwstobo/marshmallow,xLegoz/marshmallow,marshmallow-code/marshmallow,bartaelterman/marshmallow,maximkulkin/marshmallow,0xDCA/marshmallow,dwieeb/marshmallow,VladimirPal/marshmallow,jmcarp/marshmallow,etataurov/marshmallow,Bachmann1234/marshmallow,0xDCA/marshmallow,quxiaolong1504/marshmallow,daniloakamine/marshmallow,jmcarp/marshmallow,Tim-Erwin/marshmallow