[cl-cairo2-announce] new cl-cairo2 version -- now reworked x11 support

Hi, I have just uploaded the latest version of cl-cairo2. I have completely rewritten the X11 support, with the following changes: - everything is done via CFFI, no C code or shared library to install, this is much easier to debug - multiple displays are supported - there is one event loop per display, this is much easier to manage Tamas