 - add sending of failure message when autocreated fecho can't be linked to
   some link which forward was for this fecho
 - do nice unsubscribe (e.g. via memory.cfg, <date> <areaname>)
 - do use of keyword To in TIC file
 - do optional use of keyword FullName in TIC file (now it is always handled)
 - add netmail keyword %all (same as %list but with all even inaccessible
   areas)
 - do selective handle of replaces for every fecho
 - improve purging capabilities (e.g. arrival date based purging)
