Typing callbacks

[justusschock]

What does this PR do?

Part of #5023 and #7037

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[pep8speaks]

Hello @justusschock! Thanks for updating this PR.

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2021-04-21 08:19:31 UTC

[Borda]

@justusschock how far are we, mind list what is missing so others may help/contribute? 🐰

[codecov]

Codecov Report

Merging #7042 (7c7a443) into master (e4f3a8d) will decrease coverage by 6%.
The diff coverage is 89%.

@@           Coverage Diff           @@
##           master   #7042    +/-   ##
=======================================
- Coverage      92%     86%    -6%     
=======================================
  Files         197     197            
  Lines       12662   12856   +194     
=======================================
- Hits        11661   11012   -649     
- Misses       1001    1844   +843     

[carmocca]

@justusschock Why close this? You could open PRs for separate callbacks, for example, pruning should be ready to go