Face props mass matrices

[dccowan]

Pull request for face properties mass matrix

[jcapriot]

Did you try this with just the average_edge_to_face matrices? I think those should be all you need (similar to how the inner product matrices use average_edge_to_cell to create themselves).

[dccowan]

TODO LIST:

• Averaging matrix from edges to faces for unstructured meshes
• Face properties matrices for tensor, cyl, tree and unstructured

[codecov]

Codecov Report

Merging #326 (e6c2ce9) into main (3d2b2a5) will increase coverage by 0.04%.
The diff coverage is 88.46%.

@@            Coverage Diff             @@
##             main     #326      +/-   ##
==========================================
+ Coverage   85.42%   85.46%   +0.04%     
==========================================
  Files          39       39              
  Lines       11811    11993     +182     
==========================================
+ Hits        10089    10250     +161     
- Misses       1722     1743      +21     

Impacted Files	Coverage Δ
discretize/base/base_tensor_mesh.py	88.53% <ø> (ø)
discretize/base/base_mesh.py	91.49% <88.13%> (-1.47%)	⬇️
discretize/operators/inner_products.py	90.63% <89.06%> (-0.38%)	⬇️

[jcapriot]

A few more organizational changes to the code.

[jcapriot]

Please remove all of the # NOQA E731 from files in tests that you have added, that error should already be ignored in

discretize/.flake8

Line 40 in a230b12

tests/*: E731, D,

[jcapriot]

Looks good!