Version bump 5.4.0

[nijel]

Proposed changes

Version bump 5.4.0

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (PEP8, lint, formatting, renaming, etc)
• Refactoring (no functional changes, no api changes)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Build related changes (build process, tests runner, etc)
• Other (please describe):

Checklist

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• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works

Other information

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (c2f7604) 93.63% compared to head (c0459d4) 93.63%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #521   +/-   ##
=======================================
  Coverage   93.63%   93.63%           
=======================================
  Files          39       39           
  Lines        1147     1147           
  Branches      138      138           
=======================================
  Hits         1074     1074           
  Misses         48       48           
  Partials       25       25           

Flag	Coverage Δ
unittests	93.63% <100.00%> (ø)

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Files	Coverage Δ
social_django/__init__.py	90.00% <100.00%> (ø)

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