Some quick quality of life updates:

• Heat Insulation material does a MUCH better job of insulating heat :)
• Adjusted default heat and heat conductivity settings of molten metals so they stay molten a little longer
• Quality-of-life controls
  • Left Shift + number key -> hotkey for changing toolbar slot
  • Left Shift + mousewheel -> shortcut for changing toolbar slot
  • Hotkeys to jump to specific hub window tabs (I - inventory, U - upgrades, T - toolbox)