minor #3007 Add PHP 7.2 to Travis build matrix (Jean85)
minor #3007 Add PHP 7.2 to Travis build matrix (Jean85)

This PR was merged into the 2.2 branch.

Discussion
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Add PHP 7.2 to Travis build matrix

This is the same as #3006 but for the 2.2 branch, as requested.

> This is needed to test any development of #2907, since php: nightly on Travis now points to 7.3, and requiring 7.2 goes to BETA3 instead.

Commits
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471eecfd Add PHP 7.2 to Travis build matrix

keradus/PHP-CS-Fixer,kubawerlos/PHP-CS-Fixer,Soullivaneuh/PHP-CS-Fixer,Slamdunk/PHP-CS-Fixer,Slamdunk/PHP-CS-Fixer,GrahamCampbell/PHP-CS-Fixer,kubawerlos/PHP-CS-Fixer,SpacePossum/PHP-CS-Fixer,GrahamCampbell/PHP-CS-Fixer,gharlan/PHP-CS-Fixer,Soullivaneuh/PHP-CS-Fixer,FriendsOfPHP/PHP-CS-Fixer,FriendsOfPHP/PHP-CS-Fixer,gharlan/PHP-CS-Fixer,keradus/PHP-CS-Fixer,SpacePossum/PHP-CS-Fixer