Only use Unicode v8.0.0 for whitespace
Only use Unicode v8.0.0 for whitespace

ECMAScript 6 required Unicode v5.1.0 `Zs` symbols to be recognized as whitespace in addition to any `Zs` symbols in whatever Unicode version the engine implemented.

Per https://github.com/tc39/ecma262/pull/300 this is no longer the case in ES2016. 🎉

The only observable change is that U+180E is no longer considered whitespace.

mathiasbynens/regexpu-fixtures