Give a better error if key not found in Dict
(#430)
Split up GetNObjForImage into functions for each to make them more maintainable via the valid_image_types dict
(#430)
Add check in GetNObj functions to allow them to use input fields
(#430)
Remove check of pad_factor = default for stepk checks.  Instead use warning.filter to avoid warnings in unit tests when they are expected.
(#430)
Speed up RealGalaxy unit tests in config test suite
(#430)