Merge pull request #16 from Toilal/php-support

Drop PHP 5 support, Add PHP 7.1+ to TravisCI build

.travis.yml

@@ -5,31 +5,26 @@ cache:
     - vendor
     - $HOME/.composer/cache
 php:
-  - 5.6
-  - 7.0
+  - 7.1
   - 7.2
+  - 7.3
+  - 7.4
 
 matrix:
   include:
-    - php: 5.5
+    - php: 7.1
       dist: trusty
       env: COMPOSER_FLAGS='--prefer-lowest --prefer-stable'
-    - php: 7.0
-      dist: trusty
-      env: COMPOSER_FLAGS='--prefer-lowest --prefer-stable'
-    - php: 5.5
-      dist: trusty
 
 before_script:
-  - echo "xdebug.max_nesting_level=1000" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
-  - if [[ $TRAVIS_PHP_VERSION = '5.6' ]]; then PHPUNIT_FLAGS="--coverage-clover=coverage.clover"; else PHPUNIT_FLAGS=""; fi
-  - if [[ $TRAVIS_PHP_VERSION != '5.6' ]]; then phpenv config-rm xdebug.ini; fi
+  - if [[ $TRAVIS_PHP_VERSION = '7.1' ]]; then PHPUNIT_FLAGS="--coverage-clover=coverage.clover"; else PHPUNIT_FLAGS=""; fi
+  - if [[ $TRAVIS_PHP_VERSION != '7.1' ]]; then phpenv config-rm xdebug.ini; fi
   - composer self-update
   - composer update $COMPOSER_FLAGS
 
 script: vendor/phpunit/phpunit/phpunit $PHPUNIT_FLAGS
 
 after_script:
   - wget https://scrutinizer-ci.com/ocular.phar
-  - if [[ $TRAVIS_PHP_VERSION = '5.6' ]]; then php ocular.phar code-coverage:upload --format=php-clover coverage.clover; fi
+  - if [[ $TRAVIS_PHP_VERSION = '7.1' ]]; then php ocular.phar code-coverage:upload --format=php-clover coverage.clover; fi
 

composer.json

@@ -17,7 +17,7 @@
   ],
   "license": "MIT",
   "require": {
-    "php": "^5.5|^7.0",
+    "php": "^7.1",
     "jms/serializer": "^1.2|^2.0|^3.0",
     "symfony/yaml": "^2.2|^3.0|^4.0|^5.0"
   },