More modern mode fixes and 2 gallery plots.

[joa-quim]

No description provided.

[codecov-io]

Codecov Report

Merging #291 into master will increase coverage by 0.01%.
The diff coverage is 86.95%.

@@            Coverage Diff             @@
##           master     #291      +/-   ##
==========================================
+ Coverage   93.82%   93.83%   +0.01%     
==========================================
  Files          80       80              
  Lines        3642     3650       +8     
==========================================
+ Hits         3417     3425       +8     
  Misses        225      225

Impacted Files	Coverage Δ
src/makecpt.jl	100% <100%> (ø)	⬆️
src/pssolar.jl	100% <100%> (ø)	⬆️
src/psrose.jl	100% <100%> (ø)	⬆️
src/grd2cpt.jl	100% <100%> (ø)	⬆️
src/grdcontour.jl	100% <100%> (ø)	⬆️
src/common_options.jl	96.04% <70%> (ø)	⬆️

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