Macro interpolator::ieprintln

macro_rules! ieprintln {
    ($($fmt:tt)*) => { ... };
}

eprintln! but using iformat!.

Currently this allocates the complete formatted string.

For details on the context syntax see context!.

use interpolator::ieprintln;
ieprintln!("{a}, {b:?}", a = 10, b:? = "test").unwrap();