Header Library and R Functions to Solve Minimum Cost Bipartite Matching
Problem using Huhn-Munkres algorithm (Hungarian algorithm;
<https://en.wikipedia.org/wiki/Hungarian_algorithm>;
Kuhn (1955) doi:10.1002/nav.3800020109).
This is a repackaging of code written by Cong Ma in the GitHub
repo <https://github.com/mcximing/hungarian-algorithm-cpp>.