Like or Not Like - that's where the question

New `Comparison::LIKE` and `Comparison::NOTLIKE` as alternative solution for #45 :dancer: 

Support next wildcard characters:
`%` - any character(s), any amount
`_` - any character, only one
`\%` - escape for `%`
`\_` - escape for `_`
disappeared, but I not forgot :wink:

if I place it like:
```php
$like = $comparison->getOperator() === Comparison::LIKE;
/// here the pattern building
return function ($object) use ($field, $value, $like) {
```
it will be good?
just not sure