[cairo] Prolog bindings for cairo

[Stefan Salewski]

On Tue, 2015-11-10 at 10:37 +1300, Lawrence D'Oliveiro wrote:
> It seems to me that, when doing a high-level language binding for a
> library, it makes sense to take advantage of features of that
> language.
> 
> For example, when I did my Python binding for Cairo,

That may be true, but for that high level stuff we have to write
something like a tutorial. For example for Ruby Cairo, Pango, GTK3
bindings, there is a large difference to plain C usage, but not much
really up to date english tutorial. So for some usage, it took me hours
to learn how to do it :-( 

So for my initial Nim Bindings I made usage very close to C, for which
many examples are available. I may add higher level support including
garbage collection later, but that depends on my available spare time
and the number of people really interested in these bindings.