Character names should be case insensitive

```
ask me a line question
Who said "Clear your mind must be"
yoda
Who said "Clear your mind must be"
Yoda
Yep, you're right!
```

Another fail case:

```
Who said "You can run, but you'll only die tired"
boba FETT
Who said "You can run, but you'll only die tired"
Boba Fett
Yep, you're right!
```