We now have version 1.2.0, but we need the 1.2.1 at least, due to the missing fix:

     - Version 1.2.1:
      - _Bugfix_:
        ETM4x / ETE - output of context elements to client can in some
        circumstances be delayed until after subsequent atoms have been
        processed leading to incorrect memory decode access via the client
        callbacks. Fixed to flush context elements immediately they are
        committed.