justinfrench/formtastic — pull request #1096 by timoschilling (2014-11-07 01:10:21+00:00)
Title: simplify wrapper_classes_raw

```ruby
classes = nil
[*classes]
# => []
classes = "foo"
[*classes]
# => ["foo"]
classes = ["foo", "bar"]
[*classes]
# => ["foo", "bar"]
```