[Kst] Kst 1.1.1

[Brisset, Nicolas]

> The stable branch of Kst is starting to get quite a number of 
> fixes in it.  
> I'm sure some have slipped by without being included, but 
> hopefully that won't happen again.  We need to do a release 
> at some point and I'm thinking the end of July.  Does that make sense?
Sounds good to me, as some users have expressed interest in some
post-1.1.0 features (especially editing multiple curves/vectors at once)
but are reluctant to use a "snapshot" version.

Nicolas