Version 0.17.61 released

• Combat robotics 2 technology now require Laser. more
  

• Fixed fluid mixing checks for some setups when setting an assembler recipe. more
  
• Fixed flying notifications showing player's inventory updates were visible to all forces. more
  
• Fixed error during PNG decompression would cause crash on Linux. more
  
• Fixed that save files could become very large. more
  
• Fixed that cloning furnaces wouldn't preserve the crafting progress. more
  
• Fixed inserters being slower and rotationally asymmetrical after the previous version.
  
• Fixed that wandering units could be activated for longer than necessary. more
  
• Fixed a crash when trying to check if 'game' is equal to anything using the Lua API. more
  
• Added a check for overlapping crafter fluidboxes to detect wrong mod configuration. more
  
• Fixed desync related to inserter ghosts and belts. more
  
• Fixed setting health of item stack of item-with-entity-data to 1 would do nothing. more
  
• Fixed a desync with the map editor resource editor. more
  
• Fixed a desync with the map editor decorative editor. more
  
• Prevented some rare cases of fluid mixing tied to underground connections. more
  
• Fixed placing entities that consume type of energy other than electric would still show electric coverage visualization. more
  

• Added InserterPrototype::draw_inserter_arrow.
  

• Added LuaGuiElement::choose-elem-button elem_types "decorative", "item-group", "achievement", "equipment", and "technology".
  

You can get experimental releases by selecting the 'experimental' beta branch under Factorio's properties in Steam.