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## Rails 4.0.0 (unreleased) ##
+* Modify `TimeWithZone#as_json` to include 3 decimal places of sub-second accuracy
+ by default, which is optional as per the ISO8601 spec, but extremely useful. Also
+ the default behaviour of Date#toJSON() in recent versions of Chrome, Safari and
+ Firefox.
+
* Improve `String#squish` to handle Unicode whitespace. *Antoine Lyset*
* Standardise on `to_time` returning an instance of `Time` in the local system timezone