message: Causes docks to only naturally spawn in coastal towns
  Docks can still be spawned in non-coastal towns via the Creat New Building button
diff: setup.createStartBuildings = function (town) {
  - const buildingType = ['townSquare', 'tavern', 'alchemist', 'GeneralStore', 'smithy', 'market', 'temple', 'docks']
  + const buildingType = ['townSquare', 'tavern', 'alchemist', 'GeneralStore', 'smithy', 'market', 'temple']
  + if (town.location === 'seashore' || town.location === 'river coast') {
  + buildingType.push('docks')
  + }
  if (town.hasBrothel) {
  buildingType.push('brothel')
  }
  