[swift-evolution] Add AnyHashable to the standard library

[Dmitri Gribenko]

You can view the full proposal here:
https://github.com/apple/swift-evolution/pull/458/files

Dmitri

-- 
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/