- Catch fatal errors from the Net::ACME2 module.
	- Improve pound configuration parser.
	- New options to the pound source: "--comment". "--type",
	and "--listener".  The "--comment" option instructs the
	program to issue certificates for hostnames marked by
	a specific pragmatic comment.  The "--type" option
	instructs it to process hostnames defined within listeners
	of a particular type ("http" or "https").  Finally,
	"--listener" selects listener by its tag.