giD v0.9.6: WebKit web browser engine binding, GObject property support, and improved docs

[Element Green]

giD v0.9.6 has been released. This release adds a 
[WebKit](https://webkit.org/) 6 binding, the popular web browser 
engine used in Safari and other popular web browsers (D web 
browser anyone?). With the additional support libraries this 
brings the total giD library support count to 64.

This release also adds support for GObject property methods which 
was added to [gidgen](https://gidgen.dub.pm). Until now these had 
not been implemented since there are usually getter/setter 
methods also part of most GIR APIs. Some objects rely completely 
on GObject properties though which was why support was added and 
because it looks elegant as well (especially compared to calling 
getProperty/setProperty GObject templates).

**Example:**
```D
   with(new Window) {
     window.title = "Hello World Example";
     window.defaultWidth = 200;
     window.defaultHeight = 200;
     window.child = new Label("Hello World!");
     self.present;
   }
```

Some rather significant object renames were also done to make the 
API more consistent. This mainly affected classes which use 
reserved D names, such as "Object", "Exception", "Error", 
"Monitor", etc. Instead of appending the library name to the 
class name, "Wrap" is just used. So ObjectG became ObjectWrap. 
VariantG was also just named Variant, since a rename is not 
required. At this point we don't expect such significant 
backwards compatibility breaking changes moving forward to a 1.0 
release.

Many improvements were also made to the generated [adrdox 
documentation](https://www.kymorphia.com/gid/).