Squashed 'plugin_subtree1/' changes from 4efe832..f71d41b

f71d41b License correction

git-subtree-dir: plugin_subtree1
git-subtree-split: f71d41b138174f539154b528d51d8e4da9e9183c
Merge commit '1b2886c244892aeb0402f0f540fcefbc0784d561'