FlowSelect 1.0.0

Here I present you a program that allows you to select a chain of curve whose end points resides anywhere along other curves residing in the same layer.

This inspiration came from selecting one line that represents a flow line from a branch of a hydraulic drain set, and will then proceed to select the whole set of lines for that drain. Put it in other terms, it's similar to selecting a whole tree by simply selecting one of its branches.