FR: Please add possibility to show min and max counts also on gauge

[Pavel Alexeev aka Pahan-Hubbitus]

For now text result looks like 80% (4).

It will be very cool to see also, at least maximum value like: 80% (4/5).

Meantime it may be much more flexible provide just some custom format string like: {percent}% ({min} <{cur}> {max})