[sigc] ANNOUNCE: libsigc++ 1.9.8

[Martin Schulze <martin-ml hippogriff de>]

*** libsigc++ 2.0 (unstable)

libsigc++ implements a typesafe callback system for standard C++. It
allows you to define signals and to connect those signals to any
callback function, either global or a member function, regardless of
whether it is static or virtual.

libsigc++ is used by gtkmm to wrap the GTK+ signal system. It does not 
depend on GTK or gtkmm.

libsigc++ 2.0 uses modern C++ mechanisms to achieve a highly flexible,
yet typesafe callback system. It supports all features of libsigc++ 1.2
and improves upon it with a simpler and more powerful API.

This version of libsigc++ needs GNU g++ 3.2 or higher to compile.

*** Changes:

1.9.8:

* Add compatibility module that defines namespace SigC.
  namespace SigC should be API compatible to libsigc++-1.2.
  Currently only the core parts of the library are supported.
  Adaptors are still to follow.
* Fix connection::operator=(). Include connection.h in sigc++.h.
* Get rid of namespace functor.
* Rename dependency to destroy_notify_callback.
* Rename trackable::clear() to trackable::notify_callbacks().
* Move slot_base, signal_base, slot_iterator[_buf], slot_list
  out of namespace internal. They are public API.
* Add reference counter to signal_impl enabling signals
  to share the underlying information.
* Add convenience function signal#::make_slot().
* Get rid of one-letter-parameter-names.
* Get rid of "using namespace ..." in the test cases.
* Add lambda operators subscript ([]) and assign (=).
* Fix is_base_and_derived<> for const types.
* New and updated documentation.
* Add previous announces to file NEWS.

*** Download:
http://libsigc.sourceforge.net/

preliminary documentation for libsigc++ 2.0 is available here:
http://libsigc.sourceforge.net/libsigc2/docs/


Cheers!

Martin Schulze