CI: add stable-2.18, fix README

[Andersson007]

SUMMARY

CI: add stable-2.18, fix README

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.59%. Comparing base (28bf709) to head (e5c2729).

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #681       +/-   ##
===========================================
+ Coverage   25.74%   76.59%   +50.84%     
===========================================
  Files          32       20       -12     
  Lines        2808     2657      -151     
  Branches      704      679       -25     
===========================================
+ Hits          723     2035     +1312     
+ Misses       2044      420     -1624     
- Partials       41      202      +161     

Flag	Coverage Δ
integration	75.95% <ø> (?)
sanity	?
units	?

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[Andersson007]

ready for review

[laurent-indermuehle]

I saw the announcement from Felix Fontein the other day. But you're faster than me, we are lucky to have you @Andersson007!

I propose to remove 2.15 to gain time. Other than that, ok to merge.

[Andersson007]

I saw the announcement from Felix Fontein the other day. But you're faster than me, we are lucky to have you @Andersson007!

I propose to remove 2.15 to gain time. Other than that, ok to merge.

@laurent-indermuehle SGTM, merged, thanks, PTAL

[Andersson007]

@laurent-indermuehle thanks for reviewing!