Remove eq and show from num class

[Richard Eisenberg]

I don't mean to be a killjoy, but I think even something as simple as this should have a proposal. We still have to draft the changes to the Report associated with this change, and at least one is non-obvious: now numeric literals induce an Eq constraint (which should be mentioned). I'm certainly not against this change, but I don't think it's as easy as this.

Richard

> On Sep 7, 2017, at 4:43 PM, Carter Schonwald <carter.schonwald at gmail.com> wrote:
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> All yays from committee members please reply with yes to this email :) 
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> -Carter 
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