25: Improved node timer format
26: Never written; read the same as 25
27: Added light spreading flags to blocks
+ 28: Added "private" flag to NodeMetadata
*/
// This represents an uninitialized or invalid format
#define SER_FMT_VER_INVALID 255
// Highest supported serialization version
-#define SER_FMT_VER_HIGHEST_READ 27
+#define SER_FMT_VER_HIGHEST_READ 28
// Saved on disk version
-#define SER_FMT_VER_HIGHEST_WRITE 27
+#define SER_FMT_VER_HIGHEST_WRITE 28
// Lowest supported serialization version
#define SER_FMT_VER_LOWEST_READ 0
// Lowest serialization version for writing