Use vendor path to phpunit
Dropped test for 5.* due to memory issue. Don't think it's worth trying to fix.
PHP Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 32 bytes) in phar:///home/travis/.phpenv/versions/5.6.32/bin/composer/vendor/composer/semver/src/Constraint/Constraint.php on line 176
Do you guys want to takeover the ownership of the bundle? As I don't maintain it anymore.
I think @Nyholm will be at better maintainer but I can sure step up if he doesn't want to.
@jongotlin I added you as a collaborator.
Ok, thanks @dizda
@Nyholm, would you mind review this pr?