cmd_current which calls cmd_list doesn't print newline after showing desks.

```
~ λ desk
No desk activated.

dart  
rest  ~ λ desk list
dart  
rest  
~ λ desk
No desk activated.

dart  
rest  ~ λ 
```

```
~ λ desk --version
◲  desk 0.6.0
```

Probably doesn't need to be noted but my prompt is `~ λ `.

Looked at `desk`, but didn't understand why it does this if it's just calling `cmd_list`.