Added two new attack methods

[discoking]

I added two new attack methods. Both are combinator variations.

The first method adds a middle mask with the combinator attack, which uses: rockyou.txt + mask + rockyou.txt There is a limited number of masks which I believe would be the most common separator characters.

The Second method is a more thorough combinator attack, and runs through the following variations – Standard Combinator attack: rockyou.txt + rockyou.txt – Middle Combinator attack: rockyou.txt + ?n + rockyou.txt – Middle Combinator attack: rockyou.txt + ?s + rockyou.txt – End Combinator attack: rockyou.txt + rockyou.txt + ?n – End Combinator attack: rockyou.txt + rockyou.txt + ?s – Hybrid middle/end attack: rockyou.txt + ?n + rockyou.txt + ?n – Hybrid middle/end attack: rockyou.txt + ?s + rockyou.txt + ?s

Full details are on my blog: https://jeffh.net/2018/04/26/combinator_methods/

[bandrel]

A lot was changing when you did the PR originally, I've included your updates in a new branch that I'm about to merge. Thank you for your contribution.

[discoking]

@bandrel Thanks I am new to the whole collaborative coding thing, next time I will create a Dev branch to work on then merge into the main branch, then do a pull request.

[bandrel]

@discoking there was probably a way that i could have had you update the info, but it was just easier to do it this way. Your commits are still in the PR I issued plus some additional changes.