Fix performance issue with large queues

[MattiasBuelens]

Add a SimpleQueue that queues elements in bounded chunks, to avoid scalability issues with large arrays in Chrome.

Fixes #15

[MattiasBuelens]

Initial results show much better performance (using polyfill.es6.min.js):

These results are comparable or better than native streams:

Amazingly, @stardazed/streams-polyfill is even faster, sometimes over 2x faster than native! 😲

It looks like there's still room for improvement.

[matthiasbayer]

Awesome! 😍

[MattiasBuelens]

Released as 2.0.1.

In the future, I want to set up automated benchmarks to compare the polyfill's performance against native implementations or other polyfills. Hopefully, that will help to find and fix other performance issues, and to figure out how Stardazed can be that fast. 😛