Add coverage reporting

[gawng]

Purpose

Added testing coverage from codecov based on this issue

Type of change

What types of change is it?
Select the appropriate type(s) that describe this PR

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@d78b5f0). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head 3d89bbc differs from pull request most recent head 583d743. Consider uploading reports for the commit 583d743 to get more accurate results

@@            Coverage Diff            @@
##             master      #55   +/-   ##
=========================================
  Coverage          ?   46.06%           
=========================================
  Files             ?        6           
  Lines             ?      775           
  Branches          ?        0           
=========================================
  Hits              ?      357           
  Misses            ?      418           
  Partials          ?        0           

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