Increase version number due to added padding elements.

Author: Rot127

libtrace/src/trace.container.hpp

@@ -67,7 +67,7 @@ namespace SerializedTrace {
   const uint64_t meta_offset = 56LL;
 
   const uint64_t lowest_supported_version = 2LL;
-  const uint64_t highest_supported_version = 3LL;
+  const uint64_t highest_supported_version = 4LL;
 
 
     class TraceException: public std::exception