Sieve of Eratosthenes.

[deljohnson1]

• [ X] I have performed a self-review of my code
• [ X] My code follows the style guidelines of this project
• [ X] I have added tests that prove my fix is effective or that my feature works
• [ X] New and existing unit tests pass locally with my changes
• [ X] Comments in areas I changed are up to date
• [ X] I have added comments to hard-to-understand areas of my code
• [ X] I have made corresponding changes to the README.md

[codecov]

Codecov Report

Base: 95.75% // Head: 95.75% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (c0da831) compared to base (59c7a7b).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #377   +/-   ##
=======================================
  Coverage   95.75%   95.75%           
=======================================
  Files         218      218           
  Lines        8872     8887   +15     
=======================================
+ Hits         8495     8510   +15     
  Misses        377      377           

Impacted Files	Coverage Δ
Algorithms/Other/SieveOfEratosthenes.cs	100.00% <100.00%> (ø)

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[siriak]

Please fix Codacy suggestions

[siriak]

Looks good, thanks!