Reorganize README

[verdie-g]

Closes #1567

QUALITY CHECKLIST

• Changes implemented in code
• Complies with our contributing guidelines
• Adapted tests
• Documentation updated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.85%. Comparing base (ae5d0d1) to head (f059fcd).
Report is 505 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1584      +/-   ##
==========================================
+ Coverage   90.80%   90.85%   +0.04%     
==========================================
  Files         348      348              
  Lines       11184    11189       +5     
  Branches     1836     1838       +2     
==========================================
+ Hits        10156    10166      +10     
+ Misses        676      672       -4     
+ Partials      352      351       -1     

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[bkoelman]

Thanks, I'll take a look next week.

[bkoelman]

Superseded by #1718.

[verdie-g]

Thanks for finishing up this work! The new PR looks great