Support Symfony 2.7 LTS

[dxops]

Great to use #100 together with Symfony 2.7-2.8

[sebastianbergmann]

I am hesitant to add support for an old dependency.

Simply use this tool from a PHAR instead of installing it via Composer and you're all set.

[dxops]

We have a lot of tools and share them with our community. Orchestrating PHARs on CI servers and in private\public repositories is too complex in our case, that's why we use require-dev, to track dependencies in a single place. Symfony 2.7 is active release for a year https://symfony.com/roadmap?version=2.7#checker so would be good to see its support, considering that support costs nothing in this specific case. I commit to supporting any issue happens with Symfony LTS versions as a dependency for phpcpd

[sebastianbergmann]

AFAIK 2.8 is the LTS release, not 2.7.

[dxops]

It is, according to version checker
Symfony 2.7 is a long term support version with 3 years support that was published in May 2015.
Symfony 2.8 is a long term support version with 3 years support that was published in November 2015. and Schedule

[dxops]

Thanks, @sebastianbergmann !