doc additions, docstring typo fixes, cross section processing scripts

[yardasol]

Summary of changes

This PR adds the following to doc/:

• under installation.rst, a new section on cross section libraries
• under installation.rst, a new section on testing

This PR also adds a script (and an accompanying README) that users can execute to download and process the JEFF 3.1.2 library automatically for the purposes of running the examples and integration tests.

This PR also fixes typos and omissions in the docstrings from #64.

Finally, this PR updates the package version of SaltProc to 0.3.0, and designates myself as the maintainer.

This PR should be merged before #87 so we can apply the changes to the generated docs.

Types of changes

• 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 change)

Required for Merging

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
  • CI tests pass
  • Local tests pass (including Serpent2 integration tests)

Associated Issues and PRs

• Issue: closes Feature: Add section in the docs for setting up cross section libraries #79
• Issue: closes Feature: Cross section library for inegration tests and examples #88

Associated Developers

• Dev: @munkm

Checklist for Reviewers

Reviewers should use this link to get to the
Review Checklist before they begin their review.

[pep8speaks]

Hello @yardasol! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file saltproc/depcode.py:

Line 465:1: E101 indentation contains mixed spaces and tabs
Line 465:1: W191 indentation contains tabs

• In the file saltproc/version.py:

Line 8:1: E265 block comment should start with '# '
Line 96:1: W391 blank line at end of file

Comment last updated at 2021-12-16 20:53:40 UTC

[yardasol]

Figure produced by nulcides_mass.ipynb for TAP example using the JEFF library produced by process_j312.sh:

Figure produced by nulcides_mass.ipynb for TAP example using the JEFF library produced by Andrei:

Figure produced by burnup_plotter.ipynb for TAP example using the JEFF library produced by process_j312.sh:

Figure produced by burnup_plotter.ipynb for TAP example using the JEFF library produced by Andrei:

I'm not seeing much of a difference between these two cross section libraries. @andrewryh do the bugs in the JEFF 3.1.2 effect nuclides not covered in nuclides_mass.ipynb?

[abachma2]

Overall, this looks good. A few comments that I think would improve readability and use of the scripts.

[abachma2]

Looks good. Thanks for making those changes! I'll go ahead and merge this PR.