Config: Make json.array default to "on"

- This makes the default "export" output work out of the box with most
  JSON parsing libraries.

test/export.t

@@ -48,7 +48,7 @@ class TestExportCommand(TestCase):
         self.t(('add', 'test'))
 
     def export(self, identifier):
-        return json.loads(self.t((str(identifier), 'export'))[1].strip())
+        return json.loads(self.t((str(identifier), 'rc.json.array=off', 'export'))[1].strip())
 
     def assertType(self, value, type):
         self.assertEqual(isinstance(value, type), True)

test/export.yaml.t

@@ -44,7 +44,8 @@ $source_dir =~ s{[^/]+$}{..};
 if (open my $fh, '>', $rc)
 {
   print $fh "data.location=.\n",
-            "verbose=no\n";
+            "verbose=no\n",
+            "json.array=off";
   close $fh;
 }
 

test/roundtrip.t

@@ -44,7 +44,8 @@ if (open my $fh, '>', $rc)
             "verbose=off\n",
             "confirmation=no\n",
             "defaultwidth=100\n",
-            "dateformat=m/d/Y\n";
+            "dateformat=m/d/Y\n",
+            "json.array=off";
   close $fh;
 }