Resolve #140: Add --version output for binary

CHANGELOG.md

@@ -1,9 +1,12 @@
 # Changelog
 
 ## [Unreleased] - TBA
+### Fixed
+- Fixed version output when running `bin/composer-unused --version`
 ### Added
 - Added CLI argument `composer-json` which can be used to parse external projects.
   This will default to the current working directory.
+- Added error message when `composer.json` is not readable
 ### Changed
 - Change `bin/composer-unused` to be used as standalone binary
 - Package type is now `library` instead of `composer-plugin`

bin/composer-unused

@@ -38,7 +38,7 @@ use Symfony\Component\Console\Input\ArgvInput;
     /** @var ContainerInterface $container */
     $container = require __DIR__ . '/../config/container.php';
 
-    $application = new Application();
+    $application = new Application('composer-unused', UnusedCommand::VERSION);
     $application->add($container->get(UnusedCommand::class));
     $application->setDefaultCommand('unused', true);
 

src/Console/Command/UnusedCommand.php

@@ -30,6 +30,8 @@
 
 final class UnusedCommand extends Command
 {
+    public const VERSION = '0.8.0';
+
     /** @var CollectConsumedSymbolsCommandHandler */
     private $collectConsumedSymbolsCommandHandler;
     /** @var CollectRequiredDependenciesCommandHandler */