Merge branch 'develop' of https://github.com/LLNL/spack into features/custom_modulefile_from_config

.style.yapf

 [style]
 based_on_style = pep8
-column_limit = 80
+column_limit = 79

flake8.ini

 [flake8]
-ignore = W391,F403
-max-line-length = 120
\ No newline at end of file
+ignore = W391,F403,E221
+max-line-length = 79