Compositions update.
Ships’ counters database added.

  - The stuff inside is likely mostly wrong, but it’s viewable, at
    least. :p
Merge git://github.com/lumiru/fg-xsl-compo
New FG backgrounds used instead of the old ones. \o/
Low-tech untested mining composition added.
Major mistake in the ships’ counters DB corrected.

  - Nope, Protectors don’t invert the bonuses and maluses of enemy
    ships.
Add ShipList format definition.