Update md.py

[tubiana]

Correction of bfactor type in md.py ("float" -> "FLOAT").

When loading a PDB with mdanalysis (useful with large PDB) the BFACTOR is ignore because the type does not match (expect "FLOAT" but "float").

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (0b65b52) 56.25% compared to head (683ba46) 56.25%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #276   +/-   ##
=======================================
  Coverage   56.25%   56.25%           
=======================================
  Files          15       15           
  Lines        1943     1943           
=======================================
  Hits         1093     1093           
  Misses        850      850           

Impacted Files	Coverage Δ
MolecularNodes/md.py	55.27% <0.00%> (ø)

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[BradyAJohnston]

Ah thanks for catching this! MDAnlaysis also added support for b-factors for each timestep, if you wanted to have a go but otherwise I'll also do that soon.