Fix loess dispatch to avoid infinite recursion

[frankier]

Fixes #60

[andreasnoack]

Thanks for looking into this. Could you please add a test as well?

[frankier]

I guess a regression test (as added now) works?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.03%. Comparing base (e905c08) to head (5286502).
Report is 15 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #91      +/-   ##
==========================================
+ Coverage   85.90%   86.03%   +0.12%     
==========================================
  Files           2        2              
  Lines         220      222       +2     
==========================================
+ Hits          189      191       +2     
  Misses         31       31              

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[frankier]

Anything else to do here?

[andreasnoack]

It would have been great to also run the benchmarks but it seems impossible to get the working when the PR is from a fork, see #96. Anyway, this should be good. Thanks again for fixing this.