Dropping laravel < 5.4 support. Updating phpcsfixer & grumphp

.travis.yml

@@ -8,14 +8,9 @@ cache:
   directories:
     - $HOME/.composer/cache
 
-env:
-  matrix:
-    - COMPOSER_FLAGS="--prefer-lowest"
-    - COMPOSER_FLAGS=""
-
 before_script:
   - travis_retry composer self-update
-  - travis_retry composer update ${COMPOSER_FLAGS} --no-interaction --prefer-dist
+  - travis_retry composer update --no-interaction --prefer-dist
 
 script:
   - ./vendor/bin/phpunit --coverage-text --coverage-clover=coverage.clover

composer.json

@@ -20,18 +20,18 @@
     }
   ],
   "require": {
-    "php": ">=5.5.9",
-    "illuminate/support": "5.2.*|5.3.*|5.4.*",
-    "illuminate/config": "5.2.*|5.3.*|5.4.*",
-    "illuminate/view": "5.2.*|5.3.*|5.4.*",
-    "laravelcollective/html": "5.2.*|5.3.*|5.4.*"
+    "php": ">=5.6.9",
+    "illuminate/support": "5.4.*",
+    "illuminate/config": "5.4.*",
+    "illuminate/view": "5.4.*",
+    "laravelcollective/html": "5.4.*"
   },
   "require-dev": {
     "phpunit/phpunit": "~5.7",
     "mockery/mockery": "~0.9",
-    "orchestra/testbench": "3.2.*| 3.3.*|3.4.*",
-    "phpro/grumphp": "^0.9.1",
-    "friendsofphp/php-cs-fixer": "^1.11"
+    "orchestra/testbench": "3.4.*",
+    "phpro/grumphp": "^0.11",
+    "friendsofphp/php-cs-fixer": "^2.4"
   },
   "autoload": {
     "psr-4": {

grumphp.yml

@@ -3,7 +3,7 @@ parameters:
     bin_dir: vendor/bin
     stop_on_failure: true
     tasks:
-      phpcsfixer:
-        config_file: .php_cs
+      phpcsfixer2:
+        config: .php_cs.dist
       composer:
         file: ./composer.json