Fix some methods with undocumented coroutine returns

[ponyisi]

A number of functions (unintentionally, I think) returned coroutines instead of taking action. Fixed (though this is technically API breaking). Tests no longer raise warnings about non-awaited coroutines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.24%. Comparing base (54ecac9) to head (806e958).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #604      +/-   ##
==========================================
+ Coverage   96.23%   96.24%   +0.01%     
==========================================
  Files          29       29              
  Lines        1886     1892       +6     
==========================================
+ Hits         1815     1821       +6     
  Misses         71       71              

Flag	Coverage Δ
unittests	96.24% <100.00%> (+0.01%)	⬆️

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