Remove previewnet

[jribbink]

Closes #73

[nvdtf]

might wanna look into failing tests before merge

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.82%. Comparing base (f6ec637) to head (c89f2a4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #74      +/-   ##
==========================================
+ Coverage   43.80%   43.82%   +0.01%     
==========================================
  Files          40       40              
  Lines        3367     3366       -1     
==========================================
  Hits         1475     1475              
+ Misses       1632     1631       -1     
  Partials      260      260              

Flag	Coverage Δ
unittests	43.82% <ø> (+0.01%)	⬆️

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