`#not_in` with a range should respect proper precedence

Currently, doing

```ruby
relation[:id].not_eq(4).and(relation[:id].not_in(1..3))
```

will generate

```sql
"id" != 4 AND "id" < 1 OR "id" > 3
```

Which would incorrectly include records with an id of 4, as the OR
statement has higher precidence than the AND statement. The `or`
method on `Node` properly groups the statement in parenthesis.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/arel/predications.rb b/lib/arel/predications.rb
index 3050526a43..6f9a3c5f91 100644
--- a/lib/arel/predications.rb
+++ b/lib/arel/predications.rb
@@ -83,7 +83,7 @@ module Arel
           else
             right = Nodes::GreaterThan.new(self, Nodes.build_quoted(other.end, self))
           end
-          Nodes::Or.new left, right
+          left.or(right)
         end
       when Array
         Nodes::NotIn.new self, other.map { |x| Nodes.build_quoted(x, self) }