operation.reset() gives ability force retry

[timbowhite]

[codecov[bot]]

Codecov Report

Merging #66 into master will increase coverage by 0.26%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #66      +/-   ##
==========================================
+ Coverage    90.2%   90.47%   +0.26%     
==========================================
  Files           2        2              
  Lines         143      147       +4     
==========================================
+ Hits          129      133       +4     
  Misses         14       14

Impacted Files	Coverage Δ
lib/retry_operation.js	86.59% <100%> (+0.57%)	:arrow_up:

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