Format repo: black/isort/flake8 repo

[jGaboardi]

This PR takes a big step towards formatting the repo in a standard way. Two issues that I found and need to be addressed are #228 and #229.

[codecov]

Codecov Report

Merging #230 (d10e9ea) into master (f325f31) will decrease coverage by 2.80%.
The diff coverage is 77.53%.

@@            Coverage Diff             @@
##           master     #230      +/-   ##
==========================================
- Coverage   77.33%   74.53%   -2.81%     
==========================================
  Files          44       44              
  Lines        4923     4849      -74     
==========================================
- Hits         3807     3614     -193     
- Misses       1116     1235     +119     

Impacted Files	Coverage Δ
esda/smaup.py	69.35% <ø> (ø)
esda/tabular.py	59.01% <ø> (ø)
esda/crand.py	45.33% <27.27%> (-45.64%)	⬇️
esda/_version.py	40.65% <34.61%> (+2.67%)	⬆️
esda/geary_local.py	79.31% <37.50%> (-9.03%)	⬇️
esda/topo.py	67.53% <42.85%> (+1.15%)	⬆️
esda/shape.py	70.76% <44.44%> (-2.19%)	⬇️
esda/tests/test_adbscan.py	58.51% <60.00%> (-39.37%)	⬇️
esda/smoothing.py	71.82% <63.15%> (+8.27%)	⬆️
esda/silhouettes.py	56.29% <63.63%> (+0.34%)	⬆️
... and 46 more

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