Truncate milliseconds shorthand in ISO

[EzeGmnz]

Adds a new parameter to DateTime#toISO and toISOTime called truncateMilliseconds which will remove the milliseconds from the format, irrespective of their value.

Added tests

[linux-foundation-easycla]

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[erdnaxeli]

Hi, any news about this? this would be very helpful. Thanks!

[BalusC]

I see this is still not merged while this is certainly useful.

For the time being, this can be work arounded as follows:

dateTime.startOf("second").toISO({ suppressMilliseconds: true });