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* Update tests to use new PolyType syntax.Martin Odersky2016-10-121-6/+6
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* Disallow higher-kinded types that simulate general existential typesMartin Odersky2016-07-111-0/+61
We cannot handle such types in general. So we now check that a hk application C[args] where some of the arguments are wildcards does not have as a supertype a hk application ([X] -> B)[args]