Perform some code cleanup

[bachya]

Describe what the PR does:

This PR performs some gentle code cleanup.

Does this fix a specific issue?

N/A

Checklist:

• Confirm that one or more new tests are written for the new functionality.
• Update README.md with any new documentation.
• Add yourself to AUTHORS.md.

[codeclimate]

Code Climate has analyzed commit baae730 and detected 0 issues on this pull request.

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[codecov]

Codecov Report

Merging #38 (baae730) into dev (f57863d) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##               dev       #38   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines          163       163           
=========================================
  Hits           163       163           

Impacted Files	Coverage Δ
aioflo/api.py	100.00% <100.00%> (ø)

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