+ Simix:
+ - Add parameter --cfg=simix/breakpoint to raise a SIGTRAP at given time.
+
+ SMPI:
+ - Replay: The replay file has been re-written in C++.
+ - Replay: Tags used for messages sent via MPI_Send / MPI_Recv are now
+ supported. They are stored in the trace and used when replayed.
+
+ XBT:
+ - Config: the C API is now deprecated (will be removed in 3.23), and
+ the C++ API has been slightly improved.
+