updated .travis.yml

.travis.yml

@@ -1,14 +1,29 @@
 language: php
 
+sudo: false
+
+cache:
+    directories:
+        - vendor
+        - $HOME/.composer/cache
+
+env:
+    globals:
+        - deps=no
+
 before_script:
-    - composer install --prefer-source
+    - if [ "$deps" = "low" ]; then composer --prefer-lowest --prefer-stable update; fi;
+    - if [ "$deps" = "no" ]; then composer install; fi;
 
 script: phpunit
 
-php:
-  - 5.3
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
-  - hhvm
+matrix:
+    include:
+        - php: hhvm
+        - php: 5.3
+        - php: 5.4
+        - php: 5.5
+        - php: 5.6
+          env: deps=low
+        - php: 7.0
+    fast_finish: true

composer.json

@@ -23,6 +23,7 @@
     "autoload": {
         "psr-0": { "Twig_Extensions_": "lib/" }
     },
+    "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
             "dev-master": "1.2.x-dev"