Benchmark rake task
Refactor parsing methods into objects
Refactor to make sorted lazy

Lazy evaluation:

```
       user     system      total        real
lazy  0.030000   0.000000   0.030000 (  0.021657)
to_hash  2.050000   0.000000   2.050000 (  2.056102)
to_sql  2.110000   0.010000   2.120000 (  2.114156)
to_a  1.660000   0.000000   1.660000 (  1.667022)
toggle  2.280000   0.010000   2.290000 (  2.288732)
```

Previously:

```
       user     system      total        real
lazy  1.000000   0.000000   1.000000 (  0.999142)
to_hash  1.800000   0.010000   1.810000 (  1.806291)
to_sql  1.820000   0.000000   1.820000 (  1.823648)
to_a  1.400000   0.000000   1.400000 (  1.399316)
toggle  1.970000   0.000000   1.970000 (  1.975998)
```
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