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+* Fix `Time#advance` to work with dates before 1001-03-07
+
+ Before:
+
+ Time.utc(1001, 3, 6).advance(years: -1) # => 1000-03-05 00:00:00 UTC
+
+ After
+
+ Time.utc(1001, 3, 6).advance(years: -1) # => 1000-03-06 00:00:00 UTC
+
+ Note that this doesn't affect `DateTime#advance` as that doesn't use a proleptic calendar.
+
+ *Andrew White*
+
* In Zeitwerk mode, engines are now managed by the `main` autoloader. Engines may reference application constants, if the application is reloaded and we do not reload engines, they won't use the reloaded application code.
*Xavier Noria*