cleanup/fix for names of rating delimiters

src/perl/kr2/lib/PrefVote/KR2.pm

@@ -41,12 +41,11 @@ PrefVote::Core::TestSpec->register_blackbox_spec(
 __PACKAGE__->ballot_input_ties_policy(1);    # set flag for Core: this class allows input ballots to set A/B ties
 
 # rating levels
-Readonly::Hash my %rating_levels =>
-{
+Readonly::Hash my %rating_levels => (
     1 => [],
-    3 => [ qr( favor oppose ) ],
-    5 => [ qr( favor2 favor1 oppose1 oppose2 ) ],
-}
+    3 => [ qw(favor neutral oppose) ],
+    5 => [ qw(favor2 favor1 neutral oppose1 oppose2) ],
+);
 
 # list of names of winners in order by place, ties shown by a set of the tied candidates
 has winners => (