PR to fix nonidempotency

[FishmanL]

Fixes #59

[ryanhiebert]

Thanks. I'll try to get that released shortly. I'm rusty on what my release process is for this repo.

[codecov]

Codecov Report

Merging #60 (9a9241f) into main (665217e) will increase coverage by 0.10%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main      #60      +/-   ##
==========================================
+ Coverage   55.55%   55.66%   +0.10%     
==========================================
  Files          11       11              
  Lines         423      424       +1     
==========================================
+ Hits          235      236       +1     
  Misses        188      188              

Impacted Files	Coverage Δ
hirefire/procs/__init__.py	72.09% <50.00%> (+0.32%)	⬆️

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