A GType is a numerical value

See: https://developer.gnome.org/gobject/stable/gobject-Type-Information.html#GType
Map to GList and GSList
Handle namespaces without dependencies

An example of a namespace without dependencies is GLib
Map to GHashTable
Map to GError
Map an array to <C-void*>
Map unichar to <C-unsigned-int>

gunichar is defined as a guint32, see:
https://developer.gnome.org/glib/2.28/glib-Unicode-Manipulation.html#gunichar
Remove comments from type tags
Merge pull request #12 from fracek/more-types

More types