v0.1.5  --  2017.03.16
* Improve documentation
* Update dependencies

v0.1.4  --  2016.01.19
* Ensure Set polyfill function name is `Set` (#2)

v0.1.3  --  2015.11.18
* Relax validation of native implementation (do not require proper stringification of Set.prototype)

v0.1.2  --  2015.10.02
* Improve native Set detection
* Fix spelling of LICENSE
* Set.prototype.filter extension
* Update dependencies

v0.1.1  --  2014.10.07
* Fix isImplemented so it validates native Set properly
* Add getFirst and getLast extensions
* Configure linter scripts

v0.1.0  --  2014.04.29
* Assure strictly npm hosted dependencies
* Introduce faster 'primitive' alternative (doesn't guarantee order of iteration)
* Add isNativeImplemented, and some, every and copy method extensions
* If native Set is provided polyfill extends it
* Optimize forEach iteration
* Remove comparator support (as it was removed from spec)
* Provide @@toStringTag symbol, ad @@iterator symbols on iterators
* Update to use latest dependencies versions
* Improve interals

v0.0.0  --  2013.10.12
Initial (dev) version
