ufo-kit/concert — pull request #291 by tomago (2014-08-11 10:30:29+00:00)
Title: Allow preparation and finishing of experiments

I am trying some things with experiments and wanted to attach logging. It turned out to be quite cumbersome at the moment. So I added some functionality to experiments which allows us to execute code both *before* and *after* every run, like this:
```python
def log_stuff():
...

experiment.after = log_stuff
```
@matze Is that too weird to do?