[DO NOT MERGE] Log root finding

[talumbau]

Put a wrapper around calls to opt.root so we can see how much time each call takes.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.87500% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 80.81%. Comparing base (ff2eb25) to head (a5a2e02).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #904      +/-   ##
==========================================
+ Coverage   80.72%   80.81%   +0.08%     
==========================================
  Files          19       19              
  Lines        4499     4503       +4     
==========================================
+ Hits         3632     3639       +7     
+ Misses        867      864       -3     

Flag	Coverage Δ
unittests	80.81% <96.87%> (+0.08%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
ogcore/TPI.py	93.18% <100.00%> (+0.15%)	:arrow_up:
ogcore/SS.py	87.83% <93.75%> (+0.25%)	:arrow_up:

... and 9 files with indirect coverage changes

[rickecon]

@talumbau @jdebacker. Closing this PR.