Performance Improvements for the Graph Module of Sagemath

by Borassi for Sage Mathematical Software System

In the context of libraries of graph algorithms, the graph module of Sagemath stands out for its simple and well-commented code; however, our preliminary testing outlined that some of its algorithms are not as efficient as other implementations, like Boost graph library or igraph. This project will try to address this issue: the main goal is to wrap more efficient graph libraries (a ticket about Boost is already present), but we might also improve existing algorithms, if time allows.