Merge branch 'add/7.3' into 'master'

Add PHP 7.3

See merge request !2

.gitlab-ci.yml

@@ -33,3 +33,12 @@ PHPunit:PHP7.2:MySQL:
     - find . -type "f" -iname "*.php" | xargs -L "1" php -l
     - phpcs -n
     - phpunit
+
+PHPunit:PHP7.3:MySQL:
+  image: containers.ethitter.com:443/docker/images/php:7.3
+  services:
+    - mysql:5.6
+  script:
+    - find . -type "f" -iname "*.php" | xargs -L "1" php -l
+    - phpcs -n
+    - phpunit