do this:
```html
-<script type="text/javascript" src="dygraph-dev.js"></script>
+<script type="text/javascript" src="dygraph-combined.dev.js"></script>
```
This makes error messages and debugging simpler. The jsfiddle does this automatically.
-Sending a Pull Request? See our [guide to making dygraphs contributions](http://dygraphs.com/changes.html).
+Sending a Pull Request? See our [guide to making dygraphs contributions](/DEVELOP.md).