Add optional TerraBlender biome integration and cave biome pages (#37)

docs/GAMETESTS.md

@@ -62,7 +62,7 @@ right-click the ink basin once; one Gunpowder should be consumed, and hovering
 the basin should show a 20% Disarm chance. Black Dye, Clay Balls, and an
 unrelated item such as Stone should remain untouched.
 Closing and reopening the mixer should retain the chance. Taking a Link Panel
-should consume one paper and the configured ink cost, clear the current
+should consume one paper and one full Ink Vial, clear the current
 mixture, and possibly give a panel with Disarm on its tooltip. Repeat until
 a property-bearing panel appears, craft it with leather, and confirm the
 unwritten Linking Book preserves the property tooltip. After binding it,