Consider generalizing Errors so that it also works for more constrained throwers #10
Description
Unless I missed something, Errors currently is used to wrap all throwables. It would be useful to be able to use Errors (or a generalized version of it, say, SpecificErrors) to wrap interfaces which throw only one checked exception, for example, IOException. Thus, SpecificErrors would be a generic type, with a type parameter <E> which designates the kind of throwable to be wrapped. Any other unchecked exception thrown by the wrappers created by SpecificErrors would be left alone and thrown as-is.