[Request For Review] Symfony 4, PHP 7.x, Github Actions

[Plopix]

This PR revamps eZ Launchpad on Symfony 4.4 (soon released) and to PHP 7.2 minimum as support for other versions is gone.

It also greatly improves the release mechanism using now Github Actions and Github Release.

Github Actions are not available yet on eZ Systems repository but you can see the result there:

• https://github.com/plopix/launchpad/actions
• https://github.com/Plopix/launchpad/releases

Todos:

• [x] PHP 7 Type Hints
• [x] Syfmony 4.3 migration
• [x] Move to PSR12
• [x] Remove all unnecessary Doc Block
• [ ] Symfony 4.4 migration
• [x] Remove useless templates
• [x] Improve CI
• [x] Improve release mechanism
• [x] Get rid of Travis files

So now we are just waiting for Symfony 4.4 and double-check everything. But that could definitely be merged before.

Also Github Conference is in 2 days, and Github Actions should be available for eZ Systems Org as well (I hope..)

What do you think?

[Plopix]

ping @crevillo @nicolasaguenot and @amirkoklan as I think you are using it a lot ;-)

[amirkoklan]

ping @crevillo @nicolasaguenot and @amirkoklan as I think you are using it a lot ;-)

I'm back and give this a try tomorrow as the first thing

[andrerom]

code wise looks about ok, on requirements side not supporting 7.1 means it's not in sync with neither 2.5 or 3.x requirements, but it's up to you.

[Plopix]

hey @andrerom thanks for the feedback. Actually the limitation is not for eZ but for Launchpad which is the CLI that runs on the host. PHP version for eZ Platform is managed in the Docker Container engine as usual.