Cleaned up the move operation more so that I can use it in the other places that I need it.

inventory.hpp

@@ -1,6 +1,10 @@
 #include "dinkyecs.hpp"
 #include <unordered_map>
 
+// BUG: this should have a bool for "permanent" or "constant" so that
+// everything working with it knows to do the make_constant/not_constant
+// dance when using it.  Idea is the System:: ops for this would get it
+// and then look at the bool and add the constant ops as needed.
 namespace inventory {
   using Slot = std::string;