Add shifting morph

[Sparks29032]

There was already a module for shifting morphs, but it has now been integrated into the refinement stack. Tests have been added/modified for this new morph.

[codecov]

Codecov Report

Attention: Patch coverage is 96.15385% with 1 line in your changes missing coverage. Please review.

Project coverage is 96.85%. Comparing base (7ab7e6f) to head (641b5e7).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
tests/test_morphshift.py	96.15%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #155      +/-   ##
==========================================
- Coverage   96.87%   96.85%   -0.03%     
==========================================
  Files          17       18       +1     
  Lines         769      795      +26     
==========================================
+ Hits          745      770      +25     
- Misses         24       25       +1     

Files with missing lines	Coverage Δ
tests/test_morphshift.py	96.15% <96.15%> (ø)

[Sparks29032]

This code ensures that the vertical/horizontal shifts can be done independent of each other. We can also create two classes: MorphHShift and MorphVShift, but I feel that is overkill.

[Sparks29032]

CodeCov is being silly... the untested line missing coverage is the

if __name__ == "__main__":
    TestMorphShift()

line at the end of the test module.

[Sparks29032]

Ready to merge after review.

[sbillinge]

CodeCov is being silly... the untested line missing coverage is the

if __name__ == "__main__":
    TestMorphShift()

line at the end of the test module.

I think there is a way to have it avoid this, but I don't remember how. But for now, I will just merge it.