Add releasing notes

[gadomski]

Related Issue(s): n/a

Description: Adds a document describing the release process.

PR Checklist:

• Code is formatted
• Tests pass

[codecov-commenter]

Codecov Report

Merging #181 (5460062) into main (872a939) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #181   +/-   ##
=======================================
  Coverage   82.60%   82.60%           
=======================================
  Files           9        9           
  Lines         592      592           
=======================================
  Hits          489      489           
  Misses        103      103           

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