Update PHPUnit, clean up test suite and add .gitattributes to exclude dev files from exports#29

Merged

clue merged 2 commits intoclue:masterfrom clue-labs:tests

Apr 26, 2020

+34-20

Commits on Apr 25, 2020

Update PHPUnit and clean up test suite
clue
committed

Commits on Apr 26, 2020

Add .gitattributes to exclude dev files from exports
clue
committed