Bugs reports and 1.7

I'm using Sage++ in a project where I need to change near-C++
code to C++ and extract some types information and others. Of
course I stumble on bugs in the lib here and there and correct
them on the way.

The point is, the latest version available on the net is 1.7,
but the online doc is for 1.9. I'm willing to provide bug reports
and patches but it would be a bit stupid not to do that on the
really latest version.

So can I find 1.9 version or later somewhere, or should I correct and
extend the 1.7 library ?

  Olivier Galibert