This includes `view_array`, `view_base`, `view_bezcurve`,
`view_bspline`, `view_circulararray`, `view_clone`, `view_dimension`,
`view_draft_annotation`, `view_draftlink`, `view_facebinder`,
`view_fillet`, `view_label`, `view_orthoarray`, `view_point`,
`view_polararray`, `view_rectangle`, `view_text`, `view_wire`,
`view_wpproxy`.
These are added to the `draftviewproviders` Doxygen group
so that the functions and classes contained in each module
are listed appropriately in the automatically generated
documentation.
These view providers are not currently in use, the files are just
there for reference, to show how they would be used in the future.
The `super()` instruction is not made compatible with Python 2
because this code won't run with Python 2 anyway.
