v2.9.0

Bug Fixes

• engine-dom: add support for native roots in mixed mode for isNodeFromTemplate() (#2672) (5d61110)

Performance Improvements

• hoist static objects/arrays in templates (#2618) (dbf80c5)
• only add scope token when stylesheets are present (#2670) (4d463ff)
• only clone old children once (#2682) (19e8a73), closes #2680
• template-compiler: make empty children implicit (#2685) (6795167), closes #2671