ID	Type	Status	Priority	Milestone	Owner		Summary + Labels	...
	1	Enhancement	Accepted	Medium	----	rgrove		when starting in non-daemon mode, denyssh should just parse log and exit
	2	Enhancement	Accepted	Medium	----	rgrove		when run in non-daemon mode, denyssh shouldn't unblock hosts at exit time
	3	Defect	Accepted	Medium	----	rgrove		Hosts file should only be written when necessary   Performance
	4	Enhancement	Accepted	Medium	----	rgrove		Support external permanent blacklist and whitelist
	6	Defect	Accepted	High	----	rgrove		Exception when hosts file exists but is empty
	7	Enhancement	Accepted	Medium	----	rgrove		Deal with DDoS attacks intelligently to avoid making the problem worse
	8	Defect	New	Medium	----	----		ssh log patterns overly permmissive
	9	Defect	New	Medium	----	----		ip addresses never validated