Allow 0 in line ranges in vim mode.
Summary:
Vim numbers lines starting from 1. However, in command ranges such as, e.g., 0,$s/foo/bar/g
it accepts zero as a line number and treats it as 1. This commit implements the same behaviour
for kate.
Reviewers: cullmann
Reviewed By: cullmann
Subscribers: kwrite-devel, kde-frameworks-devel
Tags: Kate, Frameworks
Differential Revision: https://phabricator.kde.org/D23225