Add ignore functions for each module

[tsnobip]

From time to time I have to ignore the result of a function in my code and I tend to use the generic ignore function, but as you know it can be pretty dangerous and sometimes I actually ignore a non-applied function (it's much less common since we have uncurried mode but can still happen) or something that just doesn't have the type I expect, what do you think about having for each module an ignore function, like a Int.ignore that would only accept an int for example?