varexporter compatibility + fix phpunit deprecations

[jorisvaesen]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.54%. Comparing base (e093d99) to head (ac118a3).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master       #6   +/-   ##
=========================================
  Coverage     80.54%   80.54%           
  Complexity       97       97           
=========================================
  Files             3        3           
  Lines           221      221           
=========================================
  Hits            178      178           
  Misses           43       43           

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[BenMorel]

Thank you, @jorisvaesen!

[BenMorel]

Released in 0.7.1.