nested tuplets

[karim haddad]

Hello

First of all , i wish to say thanx to everybody working on the dev of  
lily.
the last version is great.

Ok, now for some remarks.
the nested tuplets feature which is really great has however one  
inconvenient.
As we can see in the news doc, when these occur the brackets are too  
tight
i.e they are too close one on the other and sometimes very hard to read.
Is there a way to add some extra space between them. This would be  
great.

Another question ,
when using \ChoirStaff is there a way at the end of the system to put  
a final barline
all acrooss the staffs as in Staff group.

thanx
Karim