Multiple laravel versions (#44)

* Update composer.json

* Update composer.json

* Update .travis.yml

* Update TestCase.php

* Update composer.json

* fix 

You are using the deprecated option "dev". Dev packages are installed by default now.

* Update composer.json

* Update composer.json

.travis.yml

@@ -1,10 +1,10 @@
 language: php
 
 php:
-  - 7.1
+  - 7.2
 
 before_script:
   - composer self-update
-  - composer install --prefer-source --no-interaction --dev
+  - composer install --prefer-source --no-interaction
 
 script: phpunit

composer.json

@@ -18,16 +18,16 @@
         }
     ],
     "require": {
-        "illuminate/view": "^5.6.0",
-        "illuminate/support": "^5.6.0",
-        "illuminate/contracts": "^5.6.0",
-        "php": "^7.1.3"
+        "illuminate/view": "5.6.x|5.7.x|5.8.x",
+        "illuminate/support": "5.6.x|5.7.x|5.8.x",
+        "illuminate/contracts": "5.6.x|5.7.x|5.8.x",
+        "php": "^7.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "7.*",
-        "scrutinizer/ocular": "~1.1",
-        "squizlabs/php_codesniffer": "~2.3",
-        "orchestra/testbench": "~3.6"
+        "phpunit/phpunit": "^7.5|^8.0",
+        "orchestra/testbench": "~3.8.0",
+        "scrutinizer/ocular": "^1.5",
+        "squizlabs/php_codesniffer": "~2.3"
     },
     "autoload": {
         "classmap": [

tests/TestCase.php

@@ -9,7 +9,7 @@ class TestCase extends TestBenchTestCase
     /**
      * Setup the test environment.
      */
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();