Dijkstra's shortest path first algorithm

[vmaggioli]

Description of new feature, or changes

Add's Dijkstra's shortest first path algorithm

Checklist

• [x] Your branch is up-to-date with the base branch
• [x] You've included at least one test if this is a new feature
• [x] All tests are passing

Related Issues and Discussions

Issue #9

People to notify

@manrajgrover