GtkSourceView2 development

Hi:
I want to know what's the status of some features on the gtksourceview
widget, and which is the direction of the development you're taking.

I was looking for 'code folding' feature, but nothing found, nor in
the documentation, nor in the tarball, 2.90 or 2.10, i saw some branch
on the git, but it seems it's dropped a long time ago.
So ,
which is the status of this ?
Are u planning to keep the developing the widget ?

Thxs, Erick