Correct a spelling error in feature description.
Put sf.net project url into script header.
Added one more usage example.
Better explanation for the delim variable.
Marked end of user modification area.
Better explanation for the TMOUT variable.
Don't allow matching on header if the -i option is used.
Added checking for non existing sets or invalid options on the command line.
Don't allow usage of -Ts if -i is used.
Which colors are used can now defined by the user.
Added info about color names.
Moved the check if the TMOUT variable is an integer,
so it also tests if the variable was set in the script modification area.
Added small helper functions is_int() and is_compare_str().
Did some work on the examples.
Added programmable completion.
Completed the bash completion.
completion: -Ht was in options doing arithmetic comparision erroneously.
Added option -Xs, which allows to exclude certain sets from being processed.
Added one more example for the -Xs option.
Added option -Xs to completion code.
-Cs is now needed to show the count of excluded sets.
completion: Reduced the calls to `ipset list -n'.