Changes:
- Changed requirements for placing structures on islands: instead of trying to squeeze in-between trees, now it needs a single corner to be on land (it still can't spawn in ocean). In result, islands with more dense forests should see special structures more often and more scattered around the island, rather than them spawning mostly on beaches (because they had no trees)
- When area in which structure is going to be placed contains water, it's replaced with landfill
- New structure: friendly small-cliff-base with cliffs, gun turrets and car
- Captain's cabin now contains cliff-explosives that can be placed in hold's chests to remove them
- Moved repeating code snippets into seperate functions
- Coin requisitioning replaced by a 'tax' that takes only 25% of each player's coins
- Scaled up coin economy; every biter kill now provides at least one coin; rocket coin rewards now default to the second reward chest
- Deckhand nerfed
- small adjustments to wave spawning
- cannon resistance buffed
- biters now deal bonus damage at night (up to a maximum of 10%)
- uranium ammo is now properly researchable
- modular armor/equipment slightly less rare
- biters produced per unit of pollution produced by vanilla methods now scales with difficulty
- fuel cost of major upgrades decreased
- coin reward from killing spitters doubled