`has/hasNot` Assertions

Hi Jxck,

added deep `has/hasNot` assertions

Supports:
- `String, String` _via indexOf_
- `String, RegExp`
- `Object, String` _key check_
- `Array, String|Number|..` _via indexOf_
- `Array, Array` _deep-subset match_

See tests for more examples.

Using `assert` library at [uTest](https://github.com/atmajs/UTest).

> Tried to follow your code style

Have not so much time to check all use cases, but this should cover most `has` assertions. If something have missed please make me know.

Thank you.