FIXES:
1. Fixed rendering error when animating zoom using pymandelcli. Fixes https://github.com/semuconsulting/PyMandel/issues/3
CHANGES:
1. CLI utilities pymandelcli.py and make_colormap.py updated to use standard argparse library. Arguments should now be passed in the format pymandelcli --width 800 --height 600 rather than pymandelcli width=800 height=600. Type pymandelcli -h for help.