Drop support for EOL'ed PHP versions

Author: Thibaud Fabre

.travis.yml

@@ -3,8 +3,6 @@ language: php
 sudo: required
 
 php:
-  - 5.3.3
-  - 5.4
   - 5.5
   - 5.6
   - 7.0
@@ -15,13 +13,13 @@ env:
 matrix:
   fast_finish: true
   include:
-    - php: 5.3.3
+    - php: 5.5
       env: PREFER_LOWEST="--prefer-lowest"
 
 before_script:
   - sudo apt-get install bsdtar zip
   - npm install connect serve-static
-  - composer update --prefer-source --no-interaction $PREFER_LOWEST
+  - composer update --no-interaction $PREFER_LOWEST
   - if [ -n "$PREFER_LOWEST" ];then composer update phpunit/phpunit --prefer-source --no-interaction --with-dependencies;fi
 
 script:

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": ">=5.3.3",
+        "php": ">=5.5",
         "ext-mbstring": "*",
         "doctrine/collections": "~1.0",
         "symfony/filesystem": "^2.0.5|^3.0",
@@ -21,13 +21,14 @@
     "require-dev": {
         "ext-zip": "*",
         "guzzle/guzzle": "~3.0",
+        "guzzlehttp/guzzle": "^6.0",
         "phpunit/phpunit": "^4.0|^5.0",
-        "symfony/finder": "^2.0.5|^3.0",
-        "guzzlehttp/guzzle": "^6.1"
+        "symfony/finder": "^2.0.5|^3.0"
     },
     "suggest": {
         "ext-zip": "To use the ZipExtensionAdapter",
-        "guzzle/guzzle": "To use the GuzzleTeleporter"
+        "guzzlehttp/guzzle": "To use the GuzzleTeleporter with Guzzle 6",
+        "guzzle/guzzle": "To use the GuzzleTeleporter with Guzzle 3"
     },
     "autoload": {
         "psr-4": {