Feature(Compose): Use latest symfony/config, fix #348

[EvgenyOrekhov]

Hey!

Type: new feature

Link to issue: #348

This pull request affects the following components (please check boxes):

• [ ] Core
• [ ] Analyzer
• [ ] Compiler
• [ ] Control Flow Graph
• [ ] Documentation

In raising this pull request, I confirm the following (please check boxes):

• [x] I have read and understood the Contributing Guidelines.
• [x] I have checked that another pull request for this purpose does not exist.
• [ ] I wrote some tests for this PR.

Small description of change:

The only breaking change in symfony/config 4.0.0 is

removed ConfigCachePass.

I didn't find any usages of ConfigCachePass in PHPSA, so I just bumped the version.

Thanks

[EvgenyOrekhov]

Failed on PHP 7.0 with the following message:

symfony/config v4.0.4 requires php ^7.1.3 -> your PHP version (7.0.25) does not satisfy that requirement

Solution: drop support for PHP <7.1.3.

[EvgenyOrekhov]

I fixed compatibility with PHP 7.0.

[EvgenyOrekhov]

Should I rebase?

[ddmler]

Thanks for fixing this @EvgenyOrekhov 👍