Feature: Provide option to disable rounding in humanize()

[Sankeerthana1204]

The humanize() method currently rounds values, e.g., 1.4 hours => "an hour".
It would be helpful to optionally disable rounding:

dayjs.duration(1.4, 'hour').humanize({ round: false });

This should produce "1 hour 24 minutes".

[michaelhazan]

duplicate #2970