sampling, extrema (#242) and preliminary support orthogonalising quasimatrices

[dlfivefifty]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 94.73684% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 91.09%. Comparing base (ec0ed94) to head (c8cc5e7).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/adaptivetransform.jl	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #246      +/-   ##
==========================================
+ Coverage   91.03%   91.09%   +0.06%     
==========================================
  Files          19       19              
  Lines        1751     1764      +13     
==========================================
+ Hits         1594     1607      +13     
  Misses        157      157              

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[dlfivefifty]

The test failure is unrelated