Correction to abundances for CRI-LIM yields

[xuanxu]

This PR adds a correction to the abundances data when using the following combination of yields:

• Cristallo et al. 2011 (for low mass stars)
• Limongi & Chieffi 2012 (for massive stars)

Data needs to be corrected because for metalicities z < 0.014 they don't follow solar scale.

[codecov[bot]]

Codecov Report

Merging #28 into master will increase coverage by 0.27%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
+ Coverage   99.45%   99.73%   +0.27%     
==========================================
  Files          11       11              
  Lines         729      741      +12     
  Branches      105      108       +3     
==========================================
+ Hits          725      739      +14     
+ Misses          1        0       -1     
+ Partials        3        2       -1     

Impacted Files	Coverage Δ
src/intergalactic/settings.py	100.00% <ø> (ø)
src/intergalactic/abundances.py	100.00% <100.00%> (ø)
src/intergalactic/dtds.py	100.00% <100.00%> (+4.76%)	:arrow_up:
src/intergalactic/elements.py	100.00% <100.00%> (ø)
src/intergalactic/matrix.py	99.25% <100.00%> (+0.01%)	:arrow_up:
src/intergalactic/model.py	100.00% <100.00%> (ø)

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