Faster fetch dandisets

[luiztauffer]

Fetches dandisets metadata faster using multithreading

[codecov[bot]]

Codecov Report

Merging #292 (90584d3) into master (f674eff) will increase coverage by 0.09%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #292      +/-   ##
==========================================
+ Coverage   66.18%   66.28%   +0.09%     
==========================================
  Files          35       35              
  Lines        3460     3470      +10     
==========================================
+ Hits         2290     2300      +10     
  Misses       1170     1170              

Flag	Coverage Δ
unittests	66.28% <100.00%> (+0.09%)	:arrow_up:

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Impacted Files	Coverage Δ
nwbwidgets/panel.py	78.10% <100.00%> (+1.37%)	:arrow_up:

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more

[luiztauffer]

@bendichter you need to approve it to be merged