Merge pull request #162 from webimpress/feature/php-7.3

Added PHP 7.3 support

Author: Ocramius

.travis.yml

@@ -34,6 +34,15 @@ matrix:
     - php: 7.2
       env:
         - DEPS=latest
+    - php: 7.3
+      env:
+        - DEPS=lowest
+    - php: 7.3
+      env:
+        - DEPS=locked
+    - php: 7.3
+      env:
+        - DEPS=latest
 
 before_install:
   - if [[ $TEST_COVERAGE != 'true' ]]; then phpenv config-rm xdebug.ini || return 0 ; fi