GitLab

##Summary
Investigated memory leak symptoms reported in #15 , and turns out path compression upon removal of networks was not implemented correctly, instead, it simply did a parent child reassignment.

Added to unit testing to prove desired behavior and added a memory leak unit test using a slightly modified version of the test used to uncover the problem in #15 , use -short flag in local testing to skip added slow test, as documented by https://golang.org/pkg/testing/#Short