Merge branch 'update/travis' into 'master'

Fix PHP 5.3 test

See merge request !6
9 jobs for master in 3 minutes and 40 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #5770
PHP5.3

00:03:16

passed #5771
PHP5.3:WP45

00:02:49

passed #5772
PHP5.6

00:03:07

passed #5773
PHP7.0

00:02:48

passed #5774
PHP7.1

00:02:52

passed #5775
PHP7.2

00:02:45

passed #5776
PHP7.3

00:03:02

passed #5777
PHPCS

00:02:55

 
  Deploy
passed #5778
PluginSVN

00:00:23