NLTE fixes - LTE check made, but reproducible test case needed
added helium model for testing purposes
added beginnings of a simple testframe_work
fixed typo
fixed data moveing stuff
fixed the single plasma initialization and added the plasma creation
added fixed atomic model
partial progress...towards tests of NLTE
Version with NLTE tests...apparently it works.
Improved tests for NLTE
adding new pytest version to setup.py
added pytest-cov to normal install
changed astropy version
trying to use system pytest
fixing up the NLTE tests
Merge pull request #10 from wkerzendorf/plasma/fix_nlte_tests

Plasma/fix nlte tests
fixing up the NLTE tests
Merge pull request #11 from wkerzendorf/plasma/fix_nlte_tests

fixing up the NLTE tests
Merge pull request #112 from ssim/fix_nlte_26Mar

NLTE fixes - discussion needed before merge - relates to #109