Wilfred/logstash-conf.el — pull request #2 by dakrone (2014-10-27 16:45:03+00:00)
Title: Manually require 'cl, use `cl-incf` and `cl-decf`

Previously it was possible to get:

```
logstash--open-paren-count: Invalid function: incf
```

The `cl-` prefix versions are more recommended I believe.