yahoo/mojito — pull request #614 by mojit0 (2012-10-11 01:19:47+00:00)
Title: Improve copy performance.

Updated array checks to use Y.Lang.isArray to leverage native JS array tests.
Added new "blend" routine to avoid unnecessary overhead in copy/merge pairing.
Replaced copy/merge pairings with blend() calls.
Added unit tests for blend().
Removed duplicate mergeRecursive routines to avoid confusion/bugs.