Allow to specify several separators for %random_players%

It would be very cool to be able to specify something like a list of separators for the `%random_players%` so that I could for example have 5 players per line.

Example:
```
%random_players|, |, |, |, |
%
```

Generates this:

```
Player1, Player2, Player3, Player4, Player5
Player6, Player7
```