Update 0.9.0

Additional features for long journeys:

• In some locations, the minimap now displays the environment. (Preparation takes time, so that will be added gradually at all levels.)
  
• Inventory: can be expanded via a backpack (can be found at the levels “Abandoned Cliff”, “Swamp terra”, “Nuclear desert”, “The great siege”)
  
• Inventory: added drag/drop functionality.
  
• Inventory: Sort button now works differently and can merge slots instead of just sorting by type.
  
• The last item of the “Northern warrior” set has been added at the "Medieval siege" level (cave in front of the castle entrance)
  
• island: Storage rack can now hold more items (12→16)
  
• Improved part of the English texts (thanks to user Dyztanz). There are a lot of proposed changes, so I will gradually introduce them; some will need re-dubbing.
  
• A small fix for the online co-op at the "Construction site" level.