tv_grab_sd_json: ISO8601

Is there any particular reason for using ISO8601 in this grabber? DateTime::Format::ISO8601 has a lot more (compile-time) dependencies than DateTime::Format::DateParse and is therefore harder to install on older machines. :-(

If you don't need the extra power of ISO8601 then wouldn't DateParse do the job?

Cheers,
Geoff

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