Fix #14180. Allow cross-frame use of focusin/out. Close gh-1369.
Revert "Fix #14180. Allow cross-frame use of focusin/out. Close gh-1369."

This reverts commit 9b6f0745805941a6d7b7c16c02cf56ab00021c82.
Add tests for class manipulation on jQuery object containing more than one element. Close gh-1404.
No ticket. Update npm devDependencies.
Fix #14459: Use jQuery.parseJSON instead of JSON.parse
No ticket. Remove useless comment
Fix #14379: AJAX requests on unload
No ticket: Small ajax/xhr size optimizations
Merge pull request #1 from jquery/master

merge to new