ci: Adding support for testing on PHP 7.2 and 7.3 (#129)

Author: aliabbasrizvi

.travis.yml

@@ -4,6 +4,8 @@ php:
   - '5.6'
   - '7.0'
   - '7.1'
+  - '7.2'
+  - '7.3'
 before_install:
 - composer install --dev
 addons:

composer.json

@@ -15,7 +15,7 @@
     "lastguest/murmurhash": "1.3.0",
     "guzzlehttp/guzzle": "~5.3|~6.2",
     "monolog/monolog": "~1.21",
-    "icecave/parity": "^1.0"
+    "icecave/parity": "^1.0 || ^2.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^4.8|^5.0",