Adjust prefilter test to error on string indexing in oldIE
Fix #14351: Update Sizzle
Ref #14313: NaN detection. Close gh-1352.
(cherry picked from commit 0bc0a69026ce4c1ac570a729d3c975a4a55d0ff4)
Small adjustment to prefilter test. Follow the right path for prefixes.
No ticket: fix code style inconsistencies. Closes gh-1361
Correct code style in comment line
Simplify replaceWith method. Closes gh-1276
Fix #12723 and simplification and optmization of defaultDisplay helper
No ticket: Improve line-height animation test stability
Update release script for sourcmap syntax change
Fix #14282. Don't fondle getPreventDefault if preventDefault exists. Close gh-1365.
Fix #14290. Don't throw if text node is appended to table. Close gh-1371.
Tagging the 2.1.0-beta1 release.
Updating the source version to 2.1.0-pre✓™
core: Fix cut off comment in jQuery.map from c72371f714. Close gh-1379.
No ticket: Fix XHTML regression. Close gh-1375.
No ticket: Fix IE focus test failures
(cherry picked from commit 3d6ed4483e2c9c52d83bdab72e9b884ebf720f22)
Run focus test only if document has focus

(cherry picked from commit 0b9a182ecde49adb508d76577e8f244da08a1e51)