Removes support for PHP 5.x

.travis.yml

@@ -8,7 +8,6 @@ cache:
         - $HOME/.composer/cache
 
 php:
-  - 5.6
   - 7.0
   - 7.1
   - nightly
@@ -21,10 +20,6 @@ env:
 matrix:
   fast_finish: true
   include:
-    - php: 5.6
-      env: DB=mariadb MARIADB_VERSION=10.0
-      addons:
-        mariadb: 10.0
     - php: 7.0
       env: DB=mariadb MARIADB_VERSION=10.0
       addons:

composer.json

@@ -12,7 +12,7 @@
         {"name": "Jonathan Wage", "email": "jonwage@gmail.com"}
     ],
     "require": {
-        "php": "^5.6 || ^7.0",
+        "php": "^7.0",
         "doctrine/common": "^2.7.1"
     },
     "require-dev": {