remove support for Symfony 3.0

This version line is about supporting Symfony 2.8 LTS. As it may use deprecated function, 3.0 would not be a valid version.

Author: havvg

.travis.yml

@@ -18,32 +18,13 @@ env:
     - COMPOSER_FLAGS="--prefer-lowest"
     - SYMFONY_VERSION="^2.8.2"
     - SYMFONY_VERSION="^2.8.2" COMPOSER_FLAGS="--prefer-lowest"
-    - SYMFONY_VERSION="^3.0.1"
-    - SYMFONY_VERSION="^3.0.1" COMPOSER_FLAGS="--prefer-lowest"
-    - SYMFONY_VERSION="dev-master"
 
 matrix:
     fast_finish: true
 
     allow_failures:
         - php: 7.0
         - php: hhvm
-        - env: SYMFONY_VERSION="dev-master"
-
-    exclude:
-        # Symfony 3.x requires PHP 5.5
-        - php: 5.3
-          env: SYMFONY_VERSION="^3.0.1"
-        - php: 5.4
-          env: SYMFONY_VERSION="^3.0.1"
-        - php: 5.3
-          env: SYMFONY_VERSION="^3.0.1" COMPOSER_FLAGS="--prefer-lowest"
-        - php: 5.4
-          env: SYMFONY_VERSION="^3.0.1" COMPOSER_FLAGS="--prefer-lowest"
-        - php: 5.3
-          env: SYMFONY_VERSION="dev-master"
-        - php: 5.4
-          env: SYMFONY_VERSION="dev-master"
 
 before_install:
     - phpenv config-rm xdebug.ini

composer.json

@@ -15,7 +15,7 @@
   },
 
   "require": {
-    "symfony/symfony": "^2.8.2|^3.0.1",
+    "symfony/symfony": "^2.8.2",
     "symfony/propel1-bridge": "2.7.x-dev",
     "propel/propel1": "^1.6.8",
     "symfony/security-acl": "@stable"