E0d/upgrade codecov action

[e0d]

Upgrading the checkout and codecov GitHub actions.

[codecov]

Codecov Report

Base: 50.98% // Head: 50.98% // No change to project coverage 👍

Coverage data is based on head (bb597e8) compared to base (dee79d3).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #68   +/-   ##
=======================================
  Coverage   50.98%   50.98%           
=======================================
  Files           3        3           
  Lines          51       51           
=======================================
  Hits           26       26           
  Misses         25       25           

Flag	Coverage Δ
unittests	50.98% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[e0d]

@sarina I've added and removed a toy python function to make sure that Codecov was triggered and behaved correctly at version 3.

[sarina]

Looks good to me - good testing strategy too.

Do you know if there are many breaking changes from 1 -> 2 -> 3? I wonder what it would take to get others to upgrade their repos.

[e0d]

Looks good to me - good testing strategy too.

Do you know if there are many breaking changes from 1 -> 2 -> 3? I wonder what it would take to get others to upgrade their repos.

There are some breaking changes, but they don't affect DoneXBlock. A more careful review of other uses would be required.