Fix to judiweights so that you can do spg on it directly

[rafaelorozco]

Fix to judiweights so that you can do spg on it directly with out the return array hack.

added the unary operator -judiWeights and an iterator so that isLegal(judiWeights) works.

And tests for both.

[codecov[bot]]

Codecov Report

Merging #27 into master will increase coverage by 1.10%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #27      +/-   ##
==========================================
+ Coverage   57.56%   58.67%   +1.10%     
==========================================
  Files          28       28              
  Lines        2194     2156      -38     
==========================================
+ Hits         1263     1265       +2     
+ Misses        931      891      -40     

Impacted Files	Coverage Δ
src/TimeModeling/judiWeights.jl	53.27% <100.00%> (+25.71%)	:arrow_up:
src/TimeModeling/ModelStructure.jl	50.00% <0.00%> (-21.43%)	:arrow_down:
src/TimeModeling/judiExtendedSource.jl	52.94% <0.00%> (-14.71%)	:arrow_down:
...c/TimeModeling/extended_source_interface_serial.jl	68.18% <0.00%> (-9.10%)	:arrow_down:
src/TimeModeling/time_modeling_parallel.jl	82.35% <0.00%> (-8.83%)	:arrow_down:
src/TimeModeling/time_modeling_serial.jl	73.07% <0.00%> (-7.70%)	:arrow_down:
...TimeModeling/extended_source_interface_parallel.jl	80.64% <0.00%> (-6.46%)	:arrow_down:
src/TimeModeling/judiPDEextended.jl	56.52% <0.00%> (-4.35%)	:arrow_down:
src/TimeModeling/judiWavefield.jl	21.42% <0.00%> (-3.58%)	:arrow_down:
src/TimeModeling/fwi_objective_serial.jl	84.84% <0.00%> (-3.04%)	:arrow_down:
... and 12 more

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[codecov[bot]]

Codecov Report

Merging #27 into master will increase coverage by 1.28%. The diff coverage is 75.00%.

@@            Coverage Diff             @@
##           master      #27      +/-   ##
==========================================
+ Coverage   57.56%   58.85%   +1.28%     
==========================================
  Files          28       28              
  Lines        2194     2197       +3     
==========================================
+ Hits         1263     1293      +30     
+ Misses        931      904      -27     

Impacted Files	Coverage Δ
src/TimeModeling/judiWeights.jl	50.00% <75.00%> (+22.44%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 41c8e46...d63a57f. Read the comment docs.