What probably matters to youSection of the release
What
The kill-word-before binding now chooses between deleting back to the previous word boundary and deleting a full whitespace-delimited WORD, depending on the editing mode, matching vim's WORD semantics.
Details
Selects deleteWORDBefore() instead of deleteWordBefore() based on a mode flag.
Evidence
deleteWORDBefore
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
