Create for.js

[vlazar]

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Same as https://github.com/jonschlinkert/array-unique/blob/master/benchmark/code/while.js, but preserves the order of elements in result array, which is nice to have.

Performance is almost as good as while.js

BTW, is there any reason the implementation in https://github.com/jonschlinkert/array-unique/blob/master/index.js is not from https://github.com/jonschlinkert/array-unique/blob/master/benchmark/code/while.js ?

For me on node 0.12.0 array-uniq with Set is the fastest on arrays bigger than 1000 elements. In all other cases https://github.com/jonschlinkert/array-unique/blob/master/benchmark/code/while.js is the fastest.

[vlazar]

Ah, and the description for https://www.npmjs.com/package/array-unique currently says

Return an array free of duplicate values.

which is confusing, as current implementation from https://github.com/jonschlinkert/array-unique/blob/master/index.js removes elements from the original array.

[jonschlinkert]

this is great! thanks for all the hard work and making this lib better! I have some father's day stuff going on today, but I'll review and merge in your pr as soon as I have a chance

[vlazar]

Sure, important stuff first. Thanks for super quick reply, really appreciate.