Macro stakker_log::audit

macro_rules! audit {
    ( [$($cx:tt)+], $tag:ident $(, $($tail:tt)+)? ) => { ... };
    ( [$($cx:tt)+], $tag:literal $(, $($tail:tt)+)? ) => { ... };
    ( [$($cx:tt)+], ($tag:expr) $(, $($tail:tt)+)? ) => { ... };
}

Log an audit record

See top-level docs for details.