projectblacklight/blacklight — pull request #716 by cbeer (2014-01-29 17:26:49+00:00)
Title: Add 'collapse' to facet configuration to control whether a facet should be collapsed (default) or displayed by default

e.g.

```ruby
config.add_facet_field 'some_field', collapse: false
config.add_facet_field 'some_field', collapse: true
config.add_facet_field 'some_field' # defaults to collapsed
```

Fixes #705