Standardize fieldnames

[mastrof]

Closes #23

[codecov]

Codecov Report

Patch coverage: 76.92% and project coverage change: +0.09 🎉

Comparison is base (0e4fd9a) 59.63% compared to head (79abdb1) 59.72%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
+ Coverage   59.63%   59.72%   +0.09%     
==========================================
  Files          18       18              
  Lines         441      442       +1     
==========================================
+ Hits          263      264       +1     
  Misses        178      178              

Impacted Files	Coverage Δ
src/chemotaxis/brumley.jl	26.08% <33.33%> (ø)
src/chemotaxis/brown-berg.jl	31.57% <50.00%> (ø)
src/chemotaxis/celani.jl	100.00% <100.00%> (ø)

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