geddy/model — pull request #172 by JohnPostlethwait (2014-02-14 08:05:18+00:00)
Title: Adding a clearer error message when trying to use an invalid includes.

Before the error was this:

```
TypeError: Cannot read property 'model' of undefined at utils.mixin._createSelectStatement
```

Now it is this:

```
Error: Could not find the associated model "BadAssociation" on the "GoodModel" model. at utils.mixin._createSelectStatement
```

Test added as well.