PHP 7.1+ and Symfony 4+

.travis.yml

@@ -3,7 +3,6 @@ language: php
 sudo: false
 
 php:
-  - 7.0
   - 7.1
   - 7.2
 

composer.json

@@ -31,34 +31,34 @@
 		}
 	},
 	"require": {
-		"php": "~7.0",
+		"php": "~7.1",
 		"nella/monolog-tracy": "~1.3",
-		"symfony/config": "~3.0",
-		"symfony/dependency-injection": "~3.0",
-		"symfony/expression-language": "~3.0",
+		"symfony/config": "~4.0",
+		"symfony/dependency-injection": "~4.0",
+		"symfony/expression-language": "~4.0",
 		"symfony/monolog-bundle": "~3.0",
-		"symfony/yaml": "~3.0"
+		"symfony/yaml": "~4.0"
 	},
 	"require-dev": {
-		"doctrine/orm": "2.5.4",
+		"doctrine/orm": "2.6.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"jakub-onderka/php-parallel-lint": "0.9.2",
 		"matthiasnoback/symfony-dependency-injection-test": "2.3.0",
 		"nella/coding-standard": "4.2.1",
 		"phing/phing": "2.16.1",
 		"phpunit/phpunit": "6.5.6",
-		"twig/twig": "1.24.1"
+		"twig/twig": "2.4.4"
 	},
 	"config": {
 		"bin-dir": "bin"
 	},
 	"conflict": {
-		"symfony/console": "<3.0",
-		"symfony/filesystem": "<3.0",
-		"symfony/debug": "<3.0",
-		"symfony/http-foundation": "<3.0",
-		"symfony/event-dispatcher": "<3.0",
-		"symfony/http-kernel": "<3.0"
+		"symfony/console": "<4.0",
+		"symfony/filesystem": "<4.0",
+		"symfony/debug": "<4.0",
+		"symfony/http-foundation": "<4.0",
+		"symfony/event-dispatcher": "<4.0",
+		"symfony/http-kernel": "<4.0"
 	},
 	"archive": {
 		"exclude": [