Bypass hashing when we know (through str::len) that a word won't be in
the dict.
Master:
```
real 0m26.675s
user 0m33.683s
sys 0m4.535s
```
With this change
```
real 0m24.432s
user 0m32.492s
sys 0m4.190s
```
The goal is to be as accepting and unobtrusive to new code bases as
possible. To this end, we correct typos into the closest english
dialect.
If someone wants to opt-in, they can have typos correct to a specific
english dialect.
Fixes#52Fixes#22
