v4.21.0 — The server stops keeping what it knows to itself
v4.20.0 - What the tools promise, now measured
v4.19.0 - plancher vectoriel et defauts memoire
v4.18.1 - concurrence deux clients testee
v4.18.0 - qualite du rappel memoire
v4.17.1 - seuil et cache des doublons
v4.17.0 - routes Python + tests de fond
v4.16.1 - signatures par langage
v4.16.0 - ambiguite de classe polyglotte
v4.15.2 - move_symbol echouait a tous les coups