changelog updated

Changelog.md

@@ -12,6 +12,7 @@ Changes are in reverse chronological order; newest changes at the top.
 * Fixed Compressed Iron and Pneumatic armor pieces not having durability or enchantability (oops)
 * Disabled registration of Air Conditioning upgrade handler, since there's no current mod integration for it
   * No need for pointless armor init messages about it
+* Fixed Etching Tank not accepting etching acid (introduced in 8.0.2)
 
 ## [8.0.2]