Not() method

[metal3d]

Testing again implementation, I've got some ideas...

We have "Find(value)" method that returns:

(?:value)

Right... but there is no method to return:

(?!value)

We've got AnythingBut and SomethingBut that works with ranges, not a word. Or maybe I misimplemented methods.

I suggest "Not(value)", are you ok with this idea ?

PS: Go cannot treat this regexp notation... I will find other way to do. But for other, can you give an opinion ?

[Foxboron]

I think we should go over all possible verbal ways of defining a syntax. We might be missing other functions aswell.

When it comes too the Not method: :shipit: