Release Notes Automation Tweaks

[SpicyGarlicAlbacoreRoll]

• removes release.yml
• adds body to existing github action used for release descriptions

[codecov-commenter]

Codecov Report

Merging #218 (9f8a9b6) into master (2cf18af) will increase coverage by 0.25%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #218      +/-   ##
==========================================
+ Coverage   89.73%   89.99%   +0.25%     
==========================================
  Files          52       52              
  Lines        1959     1959              
==========================================
+ Hits         1758     1763       +5     
+ Misses        201      196       -5     

Flag	Coverage Δ
unittests	89.99% <ø> (+0.25%)	:arrow_up:

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see 3 files with indirect coverage changes