Version bump to 1.5.4-alpha.
$data is an object, not an array.  Bump featured header to 0.1.1.
Version bump to 1.5.4.
Merge tag '1.5.4'

Tagging version 1.5.4.
Version bump to 1.5.5-alpha.
Don't unregister the core Recent Posts widget.
Version bump to 1.5.5.
Merge tag '1.5.5'

Tagging version 1.5.5.