Add dy spacing for spring names

Allows their display.

Fixes #253

![22409](https://f.cloud.github.com/assets/1190866/1459878/40844f50-43ff-11e3-877e-324ab206d9ce.png)
![toad_springs](https://f.cloud.github.com/assets/1190866/1459894/9a7c7ce4-43ff-11e3-9df2-281271f45206.png)