add release guide to docs

[JessicaS11]

After encountering the same challenges during multiple releases, I wrote out a release guide for making a new release (including tips for fixing the mistakes I most commonly make). I'm hoping this guide will also make it possible for others less familiar with a development workflow to create package releases.

[github-actions[bot]]

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I will automatically update this comment whenever this PR is modified

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[codecov-commenter]

Codecov Report

Merging #255 (60ac056) into development (8055e26) will not change coverage. The diff coverage is n/a.

@@             Coverage Diff              @@
##           development     #255   +/-   ##
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  Coverage        55.69%   55.69%           
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  Files               31       31           
  Lines             2009     2009           
  Branches           412      412           
============================================
  Hits              1119     1119           
  Misses             820      820           
  Partials            70       70           

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