downcase data for search

args.item is always lowercase.  this change enables searching for keywords with uppercase values.  e.g. god names, races.

inventory-manager.lic

@@ -359,7 +359,7 @@ class InventoryManager
       total_found = 0
       DRC.message "Checking #{k}:"
       v.each { |data|
-        if data.include?(item)
+        if data.downcase.match?(item)
           total_found += 1
           DRC.message "Match #{total_found}): #{data}"
         end