Daniel Rudolf bbd8ef8847 Fix Date meta header parsing with ISO-8601 datetime strings
Symfony YAML interprets ISO-8601 datetime strings and returns timestamps instead of the string. This behavior conforms to the YAML standard, i.e. this is no bug of Symfony YAML.

Fixes #336. Thanks @csholmq for reporting this.
2016-03-16 14:27:42 +01:00
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2016-03-16 13:33:52 +01:00