Added php7.3 to travis-ci

.travis.yml

@@ -31,6 +31,32 @@ matrix:
       - sudo mysql -e "use mysql; update user set authentication_string=PASSWORD('') where User='root'; update user set plugin='mysql_native_password';FLUSH PRIVILEGES;"
       - sudo mysql_upgrade -u root
       - sudo service mysql restart
+  - php: 7.3
+    sudo: required
+    services:
+      - mysql
+    before_script:
+      - curl -s http://getcomposer.org/installer | php
+      - php composer.phar install
+      - mysql -V
+      - mysqldump -V
+      - tests/create_users.sh
+    script:
+      - php -l src/Ifsnop/Mysqldump/Mysqldump.php
+      - php src/Ifsnop/Mysqldump/Mysqldump.php
+      - vendor/bin/phpunit
+      - cd tests && ./test.sh
+    addons:
+      apt:
+       sources:
+        - mysql-5.7-trusty
+       packages:
+        - mysql-server
+        - mysql-client
+    before_install:
+      - sudo mysql -e "use mysql; update user set authentication_string=PASSWORD('') where User='root'; update user set plugin='mysql_native_password';FLUSH PRIVILEGES;"
+      - sudo mysql_upgrade -u root
+      - sudo service mysql restart
   - php: 7.2
     sudo: required
     services: