First attempt on comment support.
Fix: no hypen prefixed options displayed after create with `counters'.
Fix: Missing add options display for hash:\!net & bitmap:* type of sets.
Do not show ADD options when the comment string is expected.
Small structure change.
Added ADD & DEL logic for hash:net,net.
Added support for the hash:net,port,net set type.
Fix: range completion for hash type of sets with test action.
Add specifying of protocol for bitmap:port (ADD/DEL).
Check ipset version for proto:port support of bitmap:port set types.
Fix: missing proto: in del for bitmap:port.
Fix: make sure to check only digit values when check in port range offset.
Add the new proto:port options of bitmap:port to the test action.
Update documentation (tested ipset versions).
Added Bug section in Readme.md.
Fix: list all services, not just tcp, on first listing attempt
of (ip|net),port[,(ip|net)] types.
Small fix and improvements on the hash:net,net code.
Bump version to 2.2.