Commands loading is now done by crawling commands directory under cccli module.
All command which starts by Commmand_ and which is a son of Command class are candidate.

Introduce new class RemoteCommand, which help checking needed remote functions are available
before adding a command to list of commands

Starting support of title color in tagdisplay system

server must send tags with string format

    tags[t] = max(len(self.td(t, v)), tags.get(t, len(str(t))))
TypeError: object of type 'int' has no len()