First attempt at character orientation

cmd/loader/main.go

@@ -221,5 +221,8 @@ func loadIdx(idxPath string) {
 
 	for i, group := range idx.Groups {
 		log.Printf("Group %2d: %4d records, start sprite is %6d", i, len(group.Records), group.Spec.SpriteIdx)
+		for i, rec := range group.Records {
+			log.Printf("\t%3d: %#+v", i, rec)
+		}
 	}
 }