Add Vranic algorithm

[NeilZaim]

This is a functioning version of the Vranic algorithm. It seems to be working as expected although there's a lot of room for optimization (especially regarding the way large arrays are laid out in memory). Feel free to ask questions or to modify anything you need.

[KseniaBastrakova]

@NeilZaim I checked your version of Vranic algorithm, and it works perfectly on my test files. :+1: Thank you for implementing a new type of algorithm for reduction library!