accomodate a single dot

diff --git a/maint/bump-version b/maint/bump-version
index f3b01e6..3434fde 100755 (executable)
--- a/maint/bump-version
+++ b/maint/bump-version
@@ -8,6 +8,7 @@ use autodie;
 chomp(my $LATEST = qx(grep '^[0-9]' Changes | head -1 | awk '{print \$1}'));
 
 my @parts = split /\./, $LATEST;
+splice(@parts, 1, 0, 0) if @parts == 2;
 
 my $OLD_DECIMAL = sprintf('%i.%03i%03i', @parts);