added kwargs to plot_scatter_with_lst_sq_line
fixed unitvec import in vecgeom/transformations
Merge branch 'HEAD' of https://amcmorl@github.com/amcmorl/amcmorl-py-tools
Merge branch 'master' of https://github.com/amcmorl/amcmorl-py-tools

Conflicts:
	plot_tools.py
Merge branch 'master' of https://github.com/amcmorl/amcmorl-py-tools
code_tools - added npz explorer helper function
stats_tools - added de novo with agresti-coull binomial CI approximation
Merge branch 'master' of https://github.com/amcmorl/amcmorl-py-tools