updated method names to lowercase in dataFileOpener
Converted a lot of camelCase to underscores and lowercase
added test for pre/post array equality
fixed threshold for sample_rate assertAlmostComplete
renamed tests with underscores to adhere to PEP8
added check that qapplication is available at the beginning of certain modules instead of using the helper
some PEP8 conforming
removed unused global variables
moved name not main to bottom of file
removed unused imports
updated docstring
rebuilt website