F-16 added!

A big update this time, with a page added with all the different versions of the General Dynamics/Lockheed-Martin F-16 Fighting Falcon! The details of all the Block versions are described, but to be honest, sometimes it dazzled me. If you can name more (easy) differences, please let me know.

I have also added an additional difference between the MU-300s/Beech 400s and Nextant 400XTs without thrust reversers. It appears that the nacelle cover plates have a different layout on the former and latter.