Support for tracing with `Std::panic::Location` (Feature Request)

Hello there

It's sometime useful to simply trace the location of an error's origin, through nested callers and micro managed errors.
Compared to already existing `Backtrace`, it might be more concise, and thanks to `std::panic::Location` and `#[track_caller]` being stabilized it wouldn't need nightly.

Thanks for the great crate