[swift-evolution] Proposal: Remove the "fallthrough" keyword

[Ray Fix]

> On Dec 4, 2015, at 2:16 PM, Greg Titus <greg at omnigroup.com> wrote:
> 
> Streza’s source code is an example of Duff’s Device, which is a big place where switch fallthrough is arguably the cleanest way to do things and the reason why I’d personally prefer to keep it as part of the language.

Yes.  You beat me to it but I agree.  I think having fallthrough could be an important performance optimization as refactoring would either result in the overhead of a function call or replicated code.   I would also prefer to keep it in the toolbox.

Ray Fix
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