YafaRay plugin; update roadmap and change list

[povmaniac]

I commited last code remaining in my local repo.
This part are break..
Lights:
- only 'spot' and 'point' light work.
- you can add 'area' light but not edit. Show 'Plugin(s) left garbage' message error.
- same for other light types (infinite, ambient).
Background:
- this part of code is WIP and not work atm ( black color background)
..and more.
I need more time for review this code.. and create new wpc_yafaray.beam file.
If you can create a build of exporter o review any code, is welcome!!
For see commits data..
https://github.com/povmaniaco/wings/commits/yafaray_exp