Add BPC

[paula-gradu]

Add bandit perturbation controller & corresponding test

[codecov-io]

Codecov Report

Merging #11 (78e6d95) into dev (f3c3884) will decrease coverage by 0.16%.
The diff coverage is 33.92%.

@@            Coverage Diff             @@
##              dev      #11      +/-   ##
==========================================
- Coverage   38.67%   38.51%   -0.17%     
==========================================
  Files          39       40       +1     
  Lines        1479     1532      +53     
==========================================
+ Hits          572      590      +18     
- Misses        907      942      +35     

Impacted Files	Coverage Δ
deluca/agents/_gpc.py	30.18% <0.00%> (ø)
deluca/agents/_bpc.py	32.69% <32.69%> (ø)
deluca/agents/__init__.py	100.00% <100.00%> (ø)

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[eladhazan]

I don't understand the code, but I approve it.