Date-fns: Add time to `formatRelative` with all cases

[ahtcx]

Currently formatRelative adds a time for nearby times but only displays the date for further dates as can be seen here. That behaviour isn't really consistent - shouldn't it display something like 12/31/2017 at 04:30 AM for those cases?

[kossnocorp]

That is a good point, we can allow passing a custom formatting string for the "Other".

[ahtcx]

Sorry for closing this early - I figured I could pass my own custom formatting in the locale option, but it would be nice to have an easier way to do so.

[kossnocorp]

That's cool. I can't promise when it will be released, but it's something worth implementing.