Is there a way to 'combine' tags in view branches? For example:

```
git annex view photos videos
```

produces a directory tree like so:

+ photos
  - a.jpg
  - b.jpg
  - ...
+ videos
  - a.mp4
  - b.mp4
  - ...

Is there a way to achieve the following output?:

- a.jpg
- b.jpg
- a.mp4
- b.mp4
- ...
