support 21st century 4 digit year strings for Daterange

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## [Unreleased]
 ## Fixed
 * Add 2028 bank holidays
+* support 21st century 4 digit year strings for Daterange
 
 ## 5.10.5 / 2025-11-05
 ## Fixed

lib/ndr_support/daterange.rb

@@ -6,7 +6,7 @@
 class Daterange
   attr_reader :date1, :date2, :source
 
-  OKYEARS = 1880..2030
+  OKYEARS = 1880..2099
 
   # Raised when dates are not supplied in the correct order if do_not_flip_dates is passed as true:
   class WrongDateOrderError < StandardError; end

test/daterange_test.rb

@@ -98,7 +98,7 @@ def test_year_range_attributes
   end
 
   def test_year_range_future
-    s = 2.years.from_now.strftime('%Y')
+    s = '2099'
     dr = Daterange.new(s)
     assert_equal s, dr.to_s, "Daterange should support future years up to #{s}"
   end