More Tools (Polymer)

• Added new tool type: Vein Excavator
  • Only useful for gravel and clay
  • Similar recipe to vein hammer
• Fixed an issue where multiple players with the same tool type could interfere with each other
• Added mushroom stems as valid saw block
• Polymer AutoHost is now bundled!

Help Wanted: Vein Excavator Translations are needed for Russian & Taiwanese!

Everything was tested and should work as expected, though if you find something please report it.