Move to pyproject.toml based install

[basnijholt]

Description

Please include a summary of the change and which (if so) issue is fixed.

Fixes #(ISSUE_NUMBER_HERE)

Checklist

• Fixed style issues using pre-commit run --all (first install using pip install pre-commit)
• pytest passed

Type of change

Check relevant option(s).

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• (Code) style fix or documentation update
• This change requires a documentation update

[codecov-commenter]

Codecov Report

Merging #401 (11dbd3c) into main (81dc8b5) will increase coverage by 0.03%.
The diff coverage is n/a.

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@@            Coverage Diff             @@
##             main     #401      +/-   ##
==========================================
+ Coverage   77.94%   77.98%   +0.03%     
==========================================
  Files          38       38              
  Lines        5537     5537              
  Branches      989      989              
==========================================
+ Hits         4316     4318       +2     
+ Misses       1068     1067       -1     
+ Partials      153      152       -1     

see 1 file with indirect coverage changes

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