Bump Drupal core required minimum version to 8.9.0 and support Compos…

…er 2.

.gitignore

@@ -19,3 +19,5 @@
 
 # Ignore files generated by PhpStorm
 /.idea/
+/.editorconfig
+/.gitattributes

README.md

@@ -139,14 +139,14 @@ For more details, see https://asset-packagist.org/site/about
 
 ### How do I specify a PHP version ?
 
-This project supports PHP 7.0 as minimum version (see [Drupal 8 PHP requirements](https://www.drupal.org/docs/8/system-requirements/drupal-8-php-requirements)), however it's possible that a `composer update` will upgrade some package that will then require PHP 7+.
+This project supports PHP 7.1 as minimum version (see [Drupal 8 PHP requirements](https://www.drupal.org/docs/8/system-requirements/drupal-8-php-requirements)), however it's possible that a `composer update` will upgrade some package that will then require PHP 7.1+.
 
 To prevent this you can add this code to specify the PHP version you want to use in the `config` section of `composer.json`:
 ```json
 "config": {
     "sort-packages": true,
     "platform": {
-        "php": "7.0.33"
+        "php": "7.1.21"
     }
 },
 ```

composer.json

@@ -28,25 +28,25 @@
         "sort-packages": true
     },
     "require": {
-        "php": ">=7.0.8",
+        "php": ">=7.1",
         "ext-curl": "*",
         "composer/installers": "^1.2",
         "cweagans/composer-patches": "^1.6.5",
-        "drupal/console": "^1.0.2",
-        "drupal/core": "^8.8.0",
-        "drupal/core-composer-scaffold": "^8.8.0",
+        "drupal/core": "^8.9.0",
+        "drupal/core-composer-scaffold": "^8.9.0",
         "drupal/commerce": "^2.0",
         "drupal/search_api": "^1.0",
         "drupal/swiftmailer": "^2.0",
         "drupal/token": "^1.0",
         "drupalcommerce/commerce_base": "dev-8.x-1.x",
-        "oomphinc/composer-installers-extender": "^1.1",
+        "drush/drush": "^9.7.1 | ^10.0.0",
+        "oomphinc/composer-installers-extender": "^2.0",
         "webflo/drupal-finder": "^1.0.0",
-        "webmozart/path-util": "^2.3",
-        "zaporylie/composer-drupal-optimizations": "^1.0"
+        "webmozart/path-util": "^2.3"
     },
     "require-dev": {
-        "drupal/core-dev": "^8.8.0"
+        "drupal/core-dev": "^8.9.0",
+        "zaporylie/composer-drupal-optimizations": "^1.1"
     },
     "conflict": {
         "drupal/drupal": "*"