Switch from old composer-installer to composer-plugin.
Add missing chapters to CHANGELOG.
Hide root package from packages list.
Organize imports.
Remove obsolete Contao version change.
Fix the branch aliases.
Dispatch the update command event when starting the update process.
Restore the <br> in required by listing.
Merge branch 'master' into develop
Solve #96, composer.phar will now automatically updated.
Disable hooks only on update.
Merge branch 'master' into develop

Conflicts:
	CHANGELOG.md
Fix the apc check, suggest APC is disabled even it is enabled with APC versions >= 3.0.13
Fix the feature release constraint.
Merge branch 'master' into develop

Conflicts:
	CHANGELOG.md
Merge branch 'master' into develop

Conflicts:
	CHANGELOG.md
Fix the result of Runtime::disableApc().
Merge branch 'master' into develop
Merge branch 'master' into develop
Merge branch 'master' into develop