remove dev dependency in travis configuration (#54)

* remove dev dependency in travis configuration

* some more constants

* try to fix versions

.travis.yml

@@ -11,12 +11,15 @@ cache:
     - .phpunit
 
 env:
-  global: SYMFONY_PHPUNIT_DIR=.phpunit SYMFONY_PHPUNIT_REMOVE="symfony/yaml"
+  global:
+     - SYMFONY_DEPRECATIONS_HELPER="/.*each.*/"
+     - SYMFONY_PHPUNIT_DIR=.phpunit SYMFONY_PHPUNIT_REMOVE="symfony/yaml"
+     - SYMFONY_PHPUNIT_VERSION=5.7
 
 matrix:
+  matrix: SYMFONY_VERSION=4.0.*
   include:
     - php: 7.1
-      env: DEPS=dev
     - php: 7.1
       env: COMPOSER_FLAGS="--prefer-lowest" REQUIREMENTS="phpcr/phpcr:2.1.2"
   fast_finish: true

composer.json

@@ -19,8 +19,8 @@
         "jackalope/jackalope-doctrine-dbal": "^1.2",
         "sonata-project/admin-bundle": "^3.1",
         "sylius/resource-bundle": "^0.18",
-        "doctrine/phpcr-odm": "^1.4",
-        "symfony/phpunit-bridge": "^3.2"
+        "symfony/phpunit-bridge": "^3.3 || ^4.0",
+        "doctrine/phpcr-odm": "^1.4|^2.0"
     },
     "suggest": {
         "doctrine/phpcr-odm": "To enable support for the PHPCR ODM documents",