Debug enabled when installing via composer

[foglcz]

Hi,
could you please either amend tag v0.6+ or create v0.7 from master? When installing directly from composer, the debug is enabled and it's always safer to have released version in the composer.json than having either amended sourcecodes and/or having dev-master there directly... :)

Thanks!
via v0.6...master

[bobjackman]

I've just fixed this with pull request 3