0 uses singular word instead of plural word

[orangerkater]

When the value hits 0, the plural word should be used instead of the singular word.

Currently it shows 0 day instead of 0 days. See also https://ell.stackexchange.com/a/51183.

[VincentLoy]

Interesting. Should be optional by a parameter, because if I take French as an example, both solutions are valid.