changed wiggle skip default from zero to 10, got reflectivity transparency working
Merge branch 'develop' of https://github.com/agile-geoscience/modelr into develop

Merged with Ben.
fixed wiggle plot in util.py to match physical x-axes
unit test finder/runner
aesthetic changes
Merge branch 'develop' of https://github.com/agile-geoscience/modelr into develop