Update phpunit and qunit to WordPress 5.9.2
WordPress develop tests 5.3 2020/08/30
Merge remote-tracking branch 'origin/master'
WordPress develop test v5.2.3 2019/10/09
WordPress develop tests v5.0 - 2018/12/07
Update plugin file and readme for v4.9.6
WordPress 4.9 develop tests - 2017/11/16
Fixes #1 - WordPress 4.8.1 2017/08/03
Fixes #1 - Update to latest level from develop.svn.wordpress.org