Fix IE10 bug when cloning an object element without a parentNode
Manual merge after fetch upstream
Fix weird clone bug and add a unit test to verify
Updated the comment above the fix
Add support check, added assertion to check if cleared, add edge case for backgroundPosition
Remove test file that I didn't mean to get into the previous commit
Fix #12370. Explicitly coerce bool/undef to integer.
Update release script and notes builder.
Tagging the 1.8.1 release.
Updating the source version to 1.8.2pre
Update to QUnit 1.10.0
Update Sizzle: authors.txt update and fix failing tests caused by QUnit's html addition
Shim/shiv the datalist element for crabby Uncle oldIE.
Update Sizzle: adds custom performance suite for testing across multiple selector engines and multiple versions of Sizzle
Sizzle: adjustment for speed totals display
Update .editorconfig with new properties. Close gh-915.

See http://editorconfig.org
Remove useless guard for `a`. Close gh-918.

Thanks @staabm!
Fix #12436, make delegated events fast again. Close gh-923.

Retains the rooted-at-delegateTarget behavior fixed in #12383 by afd717df9e.
Remove superfluous `@` in compressed header. Close gh-925.

Thanks @vlakoff!
Fix #12554. Sanitize data from POST. Close gh-908.