Merge branch 'fix/php-7.3' into 'master'

PHP 7.3 compatibility

See merge request !10
2 jobs for master in 2 minutes and 51 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
failed #2790
allowed to fail
PHPunit:PHP7.3:MySQL

00:02:28

 
  Deploy
passed #2791
PluginSVN

00:00:23

 
Name Stage Failure
failed
PHPunit:PHP7.3:MySQL Test
     |       |     '$output'.
| | (WordPress.Security.EscapeOutput.OutputNotEscaped)
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PHPCBF CAN FIX THE 13 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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Time: 326ms; Memory: 14MB

ERROR: Job failed: exit code 1