0.7.1

• Implement surrendering
  • You can now surrender in a battle by pressing U
  • Enemy ships can also surrender
  • Surrendered ships are less likely to be targeted but cannot loot if their side wins the battle
  • Leaders can surrender their position in battle to an opponent from the same faction
• Custom tileset support
• More interesting generated names for each ship
• Change options from the start menu
• Confirmation prompt before voting (thanks oshuma!)
• Confirmation prompt when mining an asteroid that could destroy you (thanks oshuma!)
• Fixed crash when trying to land on a nonexistent planet (thanks oshuma!)