Generate SetTCPAcceptFilter(string).
Generate SetROUTERMandatory(bool).
Generate SetXPUBVerbose(bool).
Generate MaxMsgSize().
Generate DelayAttachOnConnect().
Generate IPv4Only().
Add SetTCPAcceptFilterNil.
Merge pull request #84 from jtacoma/more-options

More support for 3.x socket options.