+SimGrid (3.23) NOT RELEASED (Release Target: June 21. 2019, 15:54 UTC)
+
+General:
+ - Stop setting random seed with srand48() at initialization.
+ - Use addr2line as a fallback for stacktraces when backtrace is not available.
+ - Build option -Denable_documentation is now OFF by default.
+
+XBT:
+ - New log appenders: stdout and stderr. Use stdout for xbt_help.
+ - Drop xbt_dict_dump.
+
+SMPI:
+ - SMPI now reports support of MPI3.1. This does not mean SMPI supports all MPI 3 calls, but it was already the case with 2.2
+ - MPI/IO is now supported over the Storage API (no files are written or read, storage is simulated). Supported calls are all synchronous ones.
+ - MPI interface is now const correct for input parameters
+
+Model-checker:
+ - Remove option 'model-check/record': Paths are recorded in any cases now.
+
+Fixed bugs (FG=FramaGit; GH=GitHub):
+ - FG#1: Broken link in error messages
+ - FG#2: missing installation documentation
+ - FG#3: missing documentation in smpirun
+ - FG#7: simple cmake call requires doxygen
+ - FG#10: Can not use MSG_process_set_data from SMPI any more
+ - FG#11: Auto-restart actors forget their on_exit behavior
+ - FG#12: -Denable_lto=OFF doesn't disable LTO
+ - FG#13: Installs unstripped file 'bin/graphicator'
+ - FG#14: Installs the empty directory 'doc/simgrid/html'
+ - FG#15: Setting -Denable_python=OFF doesn't disable the search for pybind11
+ - GH#133: Java: a process can run on a VM even if its host is off
+ - GH#320: Stacktrace: Avoid the backtrace variant of Boost.Stacktrace?
+ - GH#326: Valgrind-detected error for join() when energy plugin is activated
+
+----------------------------------------------------------------------------
+
+SimGrid (3.22) April 1. 2019
+
+The Easter Christmas Release (this one is somewhat late).
+
+Python:
+ - We are excited to introduce the SimGrid/S4U interface to your neighborhood
+ - Not complete yet: asynchronous activities (amongst others) are still missing
+ - Still ongoing: the interface may change in the future. We need more
+ testers! Please report any glitches.
+ - No new project using Java should start now. Please switch to Python.
+
+General:
+ - Some of the internal cleanups may lead to speed improvements:
+ - The hard limitation on the amount of simulated actors with
+ Java+Mac was removed. Now, the available memory is the only limit.
+ - Our refcounting was tidyied, leading to 10% speedups in some cases.
+ - We are still working on making our code robust to the actor kills
+ and hosts' churn. Things are improving, but it's not perfect yet.
+ - Replaced our own code to display a backtrace (that was forking addr2line)
+ with the Boost.Stacktrace library.
+ You won't see your backtraces without this optional dependency.
+ - Bump cmake dependency to 3.5 (provided by Ubuntu 16.04).
+ - Stop setting random seed with srand() at initialization.
+
+XML
+ - In <host> and <peer>, 'availability_file' is now 'speed_file'.
+ XML file version remains 4.2 since old files are still compatible.
+
+Java:
+ - Process termination which was broken at version 3.21 has been repaired.
+ - Expose host load plugin: loadInit, getCurrentLoad, getComputedFlops, getAvgLoad
+ - Hide the examples into examples/deprecated. New users should use Python.
+
+MSG:
+ - Drop MSG_process_create_from_stdfunc() from the API.
+ This C++ function was a pimple in the C API, made necessary at some
+ point by the Java bindings. This is fixed now.
+ - Hide the examples into examples/deprecated. New users should use S4U.
+ - MSG_process_create and MSG_process_attach now crash if the host used
+ to run this process is off.
+ - Fix the protype of MSG_process_on_exit()
+ Now use (int,void*) callbacks instead of (void*,void*) ones.
+ The implementation was ways too messy to actually work, I guess.
+
+SMPI:
+ - Change the way SMPI_SAMPLE_* macros work to avoid invalidating cache
+ too often and provide more accurate timings.
+ - Add -gdb, -lldb, and -vgdb shortcuts to help debug MPI codes with smpirun
+ - MPI_Alltoallw support
+ - Partial MPI nonblocking collectives implementation: MPI_Ibcast, MPI_Ibarrier,
+ MPI_Iallgather, MPI_Iallgatherv, MPI_Ialltoall, MPI_Ialltoallv, MPI_Igather,
+ MPI_Igatherv, MPI_Iscatter, MPI_Iscatterv, MPI_Ialltoallw, MPI_Ireduce,
+ MPI_Iallreduce, MPI_Iscan, MPI_Iexscan, MPI_Ireduce_scatter,
+ MPI_Ireduce_scatter_block, with fortran bindings.
+ - MPI_Request_get_status, MPI_Status_set_cancelled, MPI_Status_set_elements
+ support, MPI_Comm_get_name, MPI_Comm_set_name
+ - Basic implementation of generalized requests (SMPI doesn't
+ allow MPI_THREAD_MULTIPLE) : MPI_Grequest_complete, MPI_Grequest_start
+
+XBT:
+ - Drop sg_cmdline. Please use xbt_cmdline instead.
+ - Drop the C xbt_os_mutex_t; Use the C++11 std::mutex.
+ - Drop the C xbt_os_sem_t; Use the C++ xbt::OsSemaphore.
+ OsSemaphore is implemented in a portable way with C++11 threads.
+ This should allow much more threads to be created at the same time,
+ allowing Mac and Java users to simulate many more actors.
+ - Implement the 'thread' factory with std::thread instead of xbt ones.
+ It is not possible to set the stack size with threads anymore, but
+ -fsplit-stack is the way to go nowadays when using threads.
+ - Drop the xbt_os_thread_t module (now unused)
+ - Drop xbt_ex_display(), use simgrid::xbt::log_exception() instead.
+ - Drop xbt_str_join_array().
+ - Drop cunit, use Catch2 instead.
+
+Kernel:
+ - Many cleanups in the kernel::activity namespace. This was long
+ overdue, and shall open the path to many future endeavors.