Command cwho (who on a channel)
 has been modified to use getClientFromName() (Makes the code clearer)
>>  It seems to work well.
Command kick has been modified to use getClientFromName() (Makes the code clearer)
  >>  It seems to work well. Nevertheless, option proposed in the subject has not been implemented yet.
Command ban has been modified to use getClientFromName() (Makes the code clearer)
  >>  It seems to work well. Nevertheless, option proposed in the subject has not been implemented yet.
Addition of a method unbanClient in the class Channel.
Command unban has been modified to use getClientFromName() (Makes the code clearer)
  >>  It seems to work well. Nevertheless, option proposed in the subject has not been implemented yet.