Add fixed links for calculation about maxfield

[tvwenger]

Thanks for the suggestions! Adding these features would require a serious overhaul of the whole algorithm. The problem is already computationally challenging, and I'm not sure it would be possible to find a solution quickly with these constraints. Unfortunately, I don't have time to work on these suggestions currently. If anybody else wants to take a jab at it, I'd be happy to review the pull request!

[Ruzefix]

Wow, you are fast... oO
Obviously it was a little bit too much at once ^^
I'm not a coder but I think the option to use fixed links (aka shitlinks) as a base init for the randomizer should reduce the absolute amount of possible results.
To feed the array (?) first of all with the fixed links before generating the rest as randomized links is eventually the least time-consuming part of the enhancement ... so I hope ;)

Edit: Just an example to see what I mean -->