Update version number to 0.4.0

[dphogan]

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Description

Updates files to latest version number 0.4.0.

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected - these changes will not be merged until major releases!)

How Has This Been Tested?

Please describe tests that you added to the pytest codebase (if applicable).

Checklist:

• [ ] My PR has a descriptive title
• [ ] My code follows PEP8
• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] My changes generate no new errors
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] My PR passes Travis CI tests
• [ ] My PR does not reduce coverage in Codecov

If your PR does not fulfill all of the requirements in the checklist above, that's OK! Just prepend [WIP] to the PR title until they are all satisfied. If you need help, @-mention a maintainer and/or add the Status: Help Needed label.

[codecov[bot]]

Codecov Report

Merging #405 into dev will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev     #405   +/-   ##
=======================================
  Coverage   55.36%   55.36%           
=======================================
  Files          82       82           
  Lines        7135     7135           
=======================================
  Hits         3950     3950           
  Misses       3185     3185           

Impacted Files	Coverage Δ
solaris/__init__.py	100.00% <100.00%> (ø)

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