Add isort support.

[ahawker]

No description provided.

[codecov]

Codecov Report

Merging #67 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #67   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           5      5           
  Lines         266    265    -1     
  Branches       57     57           
=====================================
- Hits          266    265    -1

Impacted Files	Coverage Δ
ulid/hints.py	100% <ø> (ø)	⬆️
ulid/ulid.py	100% <ø> (ø)	⬆️
ulid/api.py	100% <ø> (ø)	⬆️
ulid/base32.py	100% <ø> (ø)	⬆️
ulid/__init__.py	100% <100%> (ø)	⬆️

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