Add more interface tests, fix #11

[xtalax]

More interface tests coming

• Shallow Water
• Burger's

[codecov]

Codecov Report

Merging #39 (3c59e80) into master (7fba480) will decrease coverage by 8.70%.
The diff coverage is 87.65%.

@@            Coverage Diff             @@
##           master      #39      +/-   ##
==========================================
- Coverage   93.18%   84.47%   -8.71%     
==========================================
  Files          11       11              
  Lines         660      728      +68     
==========================================
  Hits          615      615              
- Misses         45      113      +68     

Impacted Files	Coverage Δ
src/discretization/discretize_vars.jl	88.13% <75.00%> (-1.52%)	⬇️
src/MOL_utils.jl	89.28% <84.21%> (-5.26%)	⬇️
src/bcs/boundary_types.jl	98.83% <100.00%> (ø)
src/discretization/MOL_discretization.jl	100.00% <100.00%> (ø)
...discretization/generate_finite_difference_rules.jl	95.18% <100.00%> (ø)
src/discretization/fornberg.jl	0.00% <0.00%> (-100.00%)	⬇️
src/interiormap.jl	79.61% <0.00%> (-11.66%)	⬇️

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[xtalax]

Fixes #11, #33, #1, #3 is already fixed as well as #9 and #4, all failing (now passing) examples have been added to the interface test.

[ChrisRackauckas]

Amazing!

[xtalax]

wait I forgot to push a commit!