0.3.221

 - Adapt add_collection command to get the result returned by recent versions
   of SEAScope (starting with the one released on 2023-09-12) and notify user
   when an identifier conflict is detected during the creation of the
   collection.
 - Update version numbers when checking protocol compatibility with the viewer

0.3.212

 - Update version numbers when checking protocol compatibility with the viewer

0.3.211

 - Fix bug wherein it was possible to request the creation of a variable and
   the modification of its rendering parameters and it resulted in a crash of
   SEAScope because the second request was executed before the
   completion of the first one (i.e. trying to modify rendering parameters of a
   variable which does not exist yet)