Release version 0.0.16
Release version 0.0.16

Fixes zero length segment bifurcation angle issue and neuron
plotting in jupyter notebook bug.

eleftherioszisis/NeuroM,liesbethvanherpe/NeuroM,BlueBrain/NeuroM,lidakanari/NeuroM,wizmer/NeuroM,mgeplf/NeuroM,juanchopanza/NeuroM