Add waypoints in runtime, Angry ant's path

How can i add waypoints in runtime, i have tile system where you can place paths. So i need a waypoint on every path tile.

I had a look in the source code but the method is an internal static https://github.com/AngryAnt/Path/blob/master/Source/Navigation.cs#L284

I also tried to copy the source in my project instead of a compiled dll but unity whines with errors while visual studio says everything is ok.

AutoScale and AutoConnect are public, so whats the point of having them public if you can't add waypoints.