Tags give the ability to mark specific points in history as being important
Slightly improve the 'Pipeline_builder' interfaces.
Improve the CMake file robustness in Git-degraded environments.
Fix newline escape sequences in xdot export.
Fix display of float stats lower than 1.
No buffer dealloc in the sequence destructor.
Add new 'm to n' synchros in the pipeline (rm old '1 to n' and 'n to 1' ones).
Add a thread pool for sequence and pipeline.
Add 'tools::Thread_pinning::is_init()' method.