drop HHVM support

Author: xabbuh

.travis.yml

@@ -13,7 +13,6 @@ env:
 php:
   - 5.5
   - 5.6
-  - hhvm
 
 matrix:
   fast_finish: true
@@ -26,7 +25,7 @@ matrix:
       env: xdebug="yes"
 
 before_install:
-  - if [[ "$TRAVIS_PHP_VERSION" != "hhvm" && "$xdebug" != "yes" ]]; then phpenv config-rm xdebug.ini; fi
+  - if [[ "$xdebug" != "yes" ]]; then phpenv config-rm xdebug.ini; fi
   - composer self-update
   - composer require 'phpunit/phpunit:^4.8.35|^5.4.3|^6.0' --dev --no-update
 

CHANGELOG.md

@@ -4,6 +4,8 @@ CHANGELOG
 0.6.0
 -----
 
+* dropped the support for HHVM
+
 * updated the `X-Experience-API-Version` header to default to the latest patch
   version (`1.0.3`)