$(ordinal)
$(ordinal [number])
Appends the English ordinal suffix to a number: 1 → "1st", 2 → "2nd", 3 → "3rd", 4 → "4th" (with the 11th/12th/13th exceptions handled correctly).
Examples
$(ordinal 3)
Will display "3rd"
You're the $(ordinal {{sub_count}}) subscriber this stream!
Will display e.g. "You're the 21st subscriber this stream!"