Update v0.5

New contents

• Achievement in the new statue building.
• New Astro drill set.
• New miscellaneous part category.
  • Coal grabber : Grab coal in radius into itself.
  • Pocket furnace : Turn ore to bar using fuel while digging.
• Guide page

Balance changes

• Ore spawn in group the deeper you go.
• Reduce employee price increment.

Bugs fix

• Fix stocker active status not save.