Module with operators for the `DEq` intrerface I put them in a separate module to make it possible to avoid name ambiguities.
(==) : DEq f => f a -> f b -> BoolCompare the operands and ignore the equality proof
Alias for `deq'`
(/=) : DEq f => f a -> f b -> BoolDecide the inequality of the operands
Alias for `ngeq'`