Help redacting the NEWS file

Hello SLIME developers,

In preparation for the imminent SLIME 2.4 release, I've redacted a
NEWS entry with what's changed since the move to GitHub. It'd be too
much work to go through the ChangeLog down to October 2011, date of
the previous release, so I'm hoping I can use your collective memories
instead.

Is there something particularly worth mentioning that happened between
October 2011 and the move to GitHub?

Cheers,

-- 
Luís Oliveira
http://kerno.org/~luis/