I don't feel it's really necessary, and besides, it's annoying that
due to the way it's implemented it prevents you from doing anything
while it's shown.
In most cases, this has also resulted in limits being lifted. (The
only place I haven't done this is for planets in intermission.cpp,
but I think I'll take away that 10-planet limit as well.)
- Explicitly mention all the authors and licenses used for the new graphics
and sounds.
- Remove credits for the old music.
- Mention Valgrind and cppcheck under the Quality Assurance section.
- Add myself as additional programmer, Astrid as replacement graphics and sound
finder.