0.1.8 (May 13, 2020)

Added:

- Support for using `#[instrument]` on methods that are part of
  [`async-trait`] trait implementations (#711)
- Optional `#[instrument(err)]` argument to automatically emit an event
  if an instrumented function returns `Err` (#637)

Thanks to @ilana and @nightmared for contributing to this release!

[`async-trait`]: https://crates.io/crates/async-trait

Signed-off-by: Eliza Weisman <eliza@buoyant.io>