tj/reds — pull request #39 by wooorm (2014-11-05 15:27:59+00:00)
Title: Feature: performance improvements

By adding [stemmer](https://github.com/wooorm/stemmer) and [metaphone](https://github.com/wooorm/metaphone), performance on the benchmark increases significantly.

The benchmarks were done on a MacBook Air (late 2011), while listening to music and such, but the difference is certainly there.

Results w/ `stemmer` and `metaphone`:

```
139 op/s » tiny
29 op/s » small
10 op/s » medium
0 op/s » large
```

Results w/ `natural.Metaphone.process` and `natural.PorterStemmer.stem`:

```
96 op/s » tiny
20 op/s » small
5 op/s » medium
0 op/s » large
```

P.S. As my result are, both with and without this feature, slower than the benchmark in `Readme.md`, I’ve not updated it.