~ BugFix! The FORWARD_PORT target host argument didn't handle the optional port correctly when omitted. This has been fixed.
~ ALLOW_PORT and FORWARD_PORT now have an optional protocol argument. When omitted ALLOW_PORT creates rules for both protocols (tcp|udp) while FORWARD_PORT defaults to tcp only.
~ checkProtocol() function added for argument check.
~ formatSubnetAsHexID() function renamed to formatAsHexID() as the function can be used on either an IP address or a subnet mask.