load more metadata from models

[exaexa]

This should fix (or at least improve upon) #600

[cylon-x]

🟢  Commit 4bccc3b is formatted properly.

[codecov]

Codecov Report

Merging #611 (111073d) into master (535aaa4) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #611   +/-   ##
=======================================
  Coverage   90.29%   90.30%           
=======================================
  Files          78       78           
  Lines        1876     1877    +1     
=======================================
+ Hits         1694     1695    +1     
  Misses        182      182           

Impacted Files	Coverage Δ
src/base/types/wrappers/GeckoModel.jl	85.29% <ø> (ø)
src/base/types/Gene.jl	100.00% <100.00%> (ø)
src/base/types/MATModel.jl	91.80% <100.00%> (ø)
src/base/types/SBMLModel.jl	84.61% <100.00%> (+0.30%)	⬆️

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[cylon-x]

🟢  Commit 111073d is formatted properly.