adding a stamp to each trace to order by recording

Author: planrich

jitlog/objects.py

@@ -458,6 +458,7 @@ def read_le_addr(self, fileobj):
     def add_trace(self, trace_type, unique_id, trace_nmr, jd_name=None):
         """ Create a new trace object and attach it to the forest """
         trace = Trace(self, trace_type, self.timepos, unique_id, jd_name)
+        trace.stamp = len(self.traces)
         self.traces[unique_id] = trace
         self.last_trace = trace
         return trace