- New macro `Prometheus.@time collector <expr>` for timing `<expr>` and
pass the elapsed time to the collector.
- New macro `Prometheus.@inprogress collector <expr>` to track number of
in-progress concurrent evalutations of `<expr>`.
In both cases, `<expr>` can be a single expression, a block, or a
function *definition*. In the latter case, all calls to the function
will be instrumented (no matter the call site). See documentation for
more details.
Fredrik Ekre