Cross-Origin-Opener-Policy to same-origin.
pull 4910, Cross-Origin-Opener-Policy at developer.mozilla.org
VirtualFile API generally available to plugin developers.
pull 4974, JEP-202
SimpleBuildStep or SimpleBuildWrapper can now choose not to require a workspace context (working directory and launcher).
JENKINS-46175
CloudState to be passed to Cloud#provision and Cloud#canProvision methods.
pull 4922