[cl-cairo2-announce] minor update to cl-cairo2

Hi everyone,

I uploaded a minor update to cl-cairo2 today.

Highlights:

- the wrapper classes now use finalizers: this means that if you fail to explicitly destroy them, the GC should take care of it. However, files will not be closed until this happens, so don't rely on this, it is just a feature that helps if the user forgets to destroy the object explicitly (please use the latest CFFI if you encounter errors, earlier versions don't have cffi:finalize & co)

- minor fixes, mostly cosmetic, now the library compiles under ultra-picky SBCL without warnings

I have a bit of time now to work on cl-cairo2, so please tell me if there are any features you are missing.

Best,

Tamas