Added IDLETIMER target.
-m mark can be used multiple times now.
Added code not to display already used matches.
Not sure about it yet, left it there commented.
Added NOTRACK target.
Added TEE target.
Added TOS target. --set-tos names are shown and completed for ipv4.
Added TTL target.
Added NFQUEUE target.
Check that value of --queue-num is in range.
Added NFLOG target.
--nflog-group groups are shown and completed.
Added LOG target. --log-level values are shown and completed.
Added DSCP target and dscp match.
DiffServ Classes are shown and completed.
Skip retrieval of target options for NOTRACK.
Update Readme.md