Update composer.json
Changing exception on missing config file to not rely on symfony/filesystem
Fix #389, beConstructedThrough should unwrap args
Added a scenario for issue #389
Merge pull request #405 from ciaranmcnulty/hotfix-filesystem-nodev-dependency

Changing exception on missing con file to not rely on symfony/filesystem
Merge pull request #403 from jaspernbrouwer/master

Fixes #389, `beConstructedThrough()` should unwrap arguments
Merge pull request #402 from GrahamCampbell/patch-2

Avoid dev-master - it's evil!
Parse configuration using InputInterface passed to Application
Merge pull request #406 from mbfisher/feature/config-input

Parse configuration using InputInterface passed to Application