Merge pull request #16 from doesntmattr/fix/remove-php5.3

Fix/remove php5.3

Author: caciobanu

.travis.yml

@@ -11,8 +11,6 @@ env:
 
 matrix:
   include:
-    - php: 5.3
-      dist: precise
     - php: 7.1
       env: ADAPTER_VERSION="^1.0.0" MONGODB_VERSION=stable
 

composer.json

@@ -13,7 +13,7 @@
         "antimattr/mongodb-migrations" : "*"
     },
     "require": {
-        "php": ">=5.3.2",
+        "php": ">=5.4.45",
         "doctrine/mongodb": "1.*",
         "symfony/console": "^2.5|^3.0|^4",
         "symfony/yaml": "^2.5|^3.0|^4"