Add flakey Date.prototype.getDay and Object.keys

[jensilo]

I ~~hate~~ love JS! <3 Therefore, I wanted to add more flakeyness and support you on the great journey to make JS more ~~flakey~~ awesome.

See below my implementation for Date.prototype.getDay and Object.keys.

I espacially love the Object.keys implementation, it adds some real spice to JS. The shuffling is tricky as you could rely on it but I love that, under very rare circumstances (2% of flakey-cases), you actually get "flaked"!

Have a really great day! :)