More sophisticated probably_alive logic

[todo]

geneac/app/models/person.rb

Lines 101 to 106 in 3f73e2d

	# @TODO: More sophisticated probably_alive logic
	# Obviously a person can live to be older than 90,
	# but the US census releases records after 70 years
	# so I figure I'm good here
	# Also, what do we do about records that have no birth or death date,
	# but obviously lived and died > 90 years ago?

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This issue was generated by todo based on a TODO comment in 3f73e2d. It's been assigned to @mrysav because they committed the code.