misc: git ignore *.npy files

[georgebisbas]

Ignore norms*.npy files

[codecov]

Codecov Report

Merging #1729 (95fdd38) into master (4f2a1fb) will decrease coverage by 2.34%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1729      +/-   ##
==========================================
- Coverage   89.61%   87.26%   -2.35%     
==========================================
  Files         206      201       -5     
  Lines       33216    32669     -547     
  Branches     4314     4281      -33     
==========================================
- Hits        29766    28509    -1257     
- Misses       2960     3654     +694     
- Partials      490      506      +16     

Impacted Files	Coverage Δ
tests/test_gpu_openmp.py	4.71% <0.00%> (-93.20%)	⬇️
tests/test_adjoint.py	26.66% <0.00%> (-73.34%)	⬇️
examples/seismic/tti/operators.py	46.05% <0.00%> (-51.04%)	⬇️
examples/seismic/self_adjoint/operators.py	58.46% <0.00%> (-41.54%)	⬇️
examples/seismic/tti/wavesolver.py	57.02% <0.00%> (-41.33%)	⬇️
examples/seismic/viscoacoustic/operators.py	59.49% <0.00%> (-40.51%)	⬇️
examples/seismic/elastic/elastic_example.py	47.22% <0.00%> (-30.56%)	⬇️
...mples/seismic/viscoelastic/viscoelastic_example.py	47.22% <0.00%> (-30.56%)	⬇️
...les/seismic/viscoacoustic/viscoacoustic_example.py	45.00% <0.00%> (-25.00%)	⬇️
examples/seismic/self_adjoint/wavesolver.py	75.43% <0.00%> (-24.57%)	⬇️
... and 31 more

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