added more accurate integrator for galaxy surface densities

[mirochaj]

No description provided.

[codecov-commenter]

Codecov Report

Merging #42 (8a9738f) into main (3ab3582) will increase coverage by 0.02%.
The diff coverage is 82.14%.

@@            Coverage Diff             @@
##             main      #42      +/-   ##
==========================================
+ Coverage   68.01%   68.03%   +0.02%     
==========================================
  Files          87       87              
  Lines       15580    15600      +20     
==========================================
+ Hits        10597    10614      +17     
- Misses       4983     4986       +3     

Impacted Files	Coverage Δ
ares/static/SpectralSynthesis.py	67.28% <0.00%> (ø)
ares/populations/GalaxyEnsemble.py	59.76% <88.46%> (+0.37%)	⬆️

---

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 3ab3582...8a9738f. Read the comment docs.