Abs Absolute value of integer.

Contains returns true if test string exists in string list.

GetPermuations returns all comvination of input int array.

GetWrappedIndex will return the next index from an array as if it was a loop.

conversions from adapted from https://gamedevelopment.tutsplus.com/tutorials/introduction-to-axial-coordinates-for-hexagonal-tile-based-games--cms-28820.

good candiate for generics?.