Update Composer, update everything

vendor/drupal-composer/drupal-scaffold/.scenarios.lock/phpunit4/.gitignore

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+vendor

vendor/drupal-composer/drupal-scaffold/.scenarios.lock/phpunit4/composer.json

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+{
+    "name": "drupal-composer/drupal-scaffold",
+    "description": "Composer Plugin for updating the Drupal scaffold files when using drupal/core",
+    "type": "composer-plugin",
+    "license": "GPL-2.0-or-later",
+    "require": {
+        "php": ">=5.4.5",
+        "composer-plugin-api": "^1.0.0",
+        "composer/semver": "^1.4"
+    },
+    "autoload": {
+        "psr-4": {
+            "DrupalComposer\\DrupalScaffold\\": "src/"
+        }
+    },
+    "extra": {
+        "class": "DrupalComposer\\DrupalScaffold\\Plugin",
+        "branch-alias": {
+            "dev-master": "2.0.x-dev"
+        }
+    },
+    "scripts": {
+        "cs": "phpcs --standard=PSR2 -n src",
+        "cbf": "phpcbf --standard=PSR2 -n src",
+        "unit": "phpunit --colors=always",
+        "lint": [
+            "find src -name '*.php' -print0 | xargs -0 -n1 php -l"
+        ],
+        "test": [
+            "@lint",
+            "@unit"
+        ],
+        "scenario": ".scenarios.lock/install",
+        "post-update-cmd": [
+            "create-scenario phpunit4 'phpunit/phpunit:^4.8.36' --platform-php '5.5.27'"
+        ]
+    },
+    "config": {
+        "optimize-autoloader": true,
+        "sort-packages": true,
+        "platform": {
+            "php": "5.5.27"
+        },
+        "vendor-dir": "../../vendor"
+    },
+    "require-dev": {
+        "composer/composer": "dev-master",
+        "g1a/composer-test-scenarios": "^2.1.0",
+        "phpunit/phpunit": "^4.8.36",
+        "squizlabs/php_codesniffer": "^2.8"
+    },
+    "minimum-stability": "stable"
+}

vendor/drupal-composer/drupal-scaffold/.scenarios.lock/phpunit4/src

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+../../src

vendor/drupal-composer/drupal-scaffold/.scenarios.lock/phpunit4/tests

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+../../tests