Fix abnormal font leading metric caused by U+30FB.

Fixed the abnormally large scaled font leading metric
caused by Japanese character U+30FB by specifying a
maximum font leading metric in order to restrict
the maximum line height.

(See https://github.com/lotem/squirrel/pull/15#issuecomment-12600211
 for more information.)
Revert "Remove trailing whitespace in candidate format."

I believe that an extra space looks better for most of us and qualify
the default, a conclusion based on user feedback.

This reverts commit ebc5414db8ec7410b160224b1306a62221da1727.
squirrel.yaml: bump version.