Jon Meow 309ec35f95 Rename executable_semantics to explorer (#1188) %!s(int64=4) %!d(string=hai) anos
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destruct_original.carbon 309ec35f95 Rename executable_semantics to explorer (#1188) %!s(int64=4) %!d(string=hai) anos
reassign_original.carbon 309ec35f95 Rename executable_semantics to explorer (#1188) %!s(int64=4) %!d(string=hai) anos