Make some Wages of War sprites displayable

internal/assetstore/object.go

@@ -42,7 +42,7 @@ func (a *AssetStore) Object(name string) (*Object, error) {
 	}
 	log.Printf("Loading object %v", name)
 
-	filename, err := a.lookup(name, "obj", "Obj")
+	filename, err := a.lookup(name, "obj", "Obj", "spr")
 	if err != nil {
 		return nil, err
 	}