Squashed 'classes/styles-child-notices/' changes from 9b8aa37..a6c292d

a6c292d Check  action to avoid notice.
70db2b4 Add checks for  actions to avoid notices.
5ab5df6 Suppress notices for unset  variable

git-subtree-dir: classes/styles-child-notices
git-subtree-split: a6c292d6d4e98f6ae82036eaf4956ebfb4cf1a88
Merge commit '66b96c508f3984218f7ac6f44d3a18b3f70f48cf'
Version bump
Merge branch 'r/1.0.4'