Create parser for year-only dates for years < 1000 or > 9999

[todo]

geneac/app/models/concerns/parseable_date.rb

Lines 25 to 28 in bffd4d3

	# @todo In the event I need to parse years < 1000 or > 9999... fix this
	def self.parse_four_digit_year(date)
	Date.new(date.to_i) if !date.nil? && date.match(/^[1-9][0-9]{3}$/)
	end

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This issue was generated by todo based on a todo comment in bffd4d3. It's been assigned to @mrysav because they committed the code.