Guzzle 6 support

.gitignore

@@ -1,3 +1,5 @@
 /vendor/
 /build/
 /docs/reference
+/.idea
+/composer.lock

.travis.yml

@@ -1,21 +1,23 @@
 language: php
 php:
-  - 7.0
-  - 5.6
-  - 5.5
-  - 5.4
+  - '5.6'
+  - '7.0'
+  - '7.1'
+  - '7.2'
   - hhvm
+  - nightly
 
 matrix:
   allow_failures:
-    - php: 7.0
+    - php: nightly
 
 branches:
     only:
         - /^v\d\.\d/
+
 cache:
   directories:
-    - vendor
+    - $HOME/.composer/cache/files
 
 before_script:
   - composer install --no-interaction

CHANGELOG.md

@@ -1,3 +1,7 @@
+## v3.0.0 - 2017-12-12
+
+- support for guzzle >6.0
+
 ## v2.2.0 - 2015-12-7
 - **NEW META-13** Allow for 201 response on refund - *Joakim.L*
 

composer.json

@@ -17,17 +17,17 @@
     },
     "minimum-stability": "stable",
     "require": {
-        "php": ">=5.4.0",
-        "guzzlehttp/guzzle": ">=4.2,<6.0"
+        "php": ">=5.6.0",
+        "guzzlehttp/guzzle": "~6.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.2.*",
+        "phpunit/phpunit": "~5.0",
         "squizlabs/php_codesniffer": "1.5.*",
         "phpmd/phpmd": "2.1.*",
         "phploc/phploc": "2.0.*",
         "sebastian/phpcpd": "2.0.*",
         "satooshi/php-coveralls": "0.6.*",
-        "apigen/apigen": "4.0.*",
+        "apigen/apigen": "~4.0",
         "klarna/apigen-theme": "~1.0"
     },
     "scripts": {