shah314/clique: Genetic Algorithm for the Maximum Clique Problem

(Fixed a minor bug) Implementation of a genetic algorithm for the maximum clique problem in C++. A clique of a graph is a set of vertices in which each pair in the set have an edge between them i.e. it is a complete subgraph. A clique of maximum size is called the maximum clique. The algorithm uses new types of crossovers to achieve good results on several public graph datasets.