Oh, I forgot to mention, but I've been making some changes to the simulation unrelated to the testing. Well, some of them have been relatedâ€¦

In the tension model utilities, you can now pick *x_min* and *x_max*
when plotting energy landscapes *E(x)* (that was for plotting Kramersâ€™
cusp potential). You can also pick *F_max* when plotting *F(x)*.

I also ripped apart the tension-group idea and put it back together. The initial implementation was a bit embarassing. Now you can do things that tension groups are intended for, like having two seperate WLC groups (for, say, folded- and unfolded-domains).

Subversion is lots of fun, by the way ;).