move CHANGELOG update to 0.9.2
# Changelog
## 0.9.2-dev
+ - default to resetting statistics, disable with `--no-reset-stats`, display spawning statistics before resetting
## 0.9.1 Aug 1, 2020
- return `GooseStats` from `GooseAttack` `.execute()`
- display `GooseStats` with fmt::Display (ie `print!("{}", goose_stats);`)
- make it possible to pass a closure to GooseTask::new
- fix display of `GooseError` and `GooseTaskError`
- - default to resetting statistics, disable with `--no-reset-stats`, display spawning statistics before resetting
## 0.9.0 July 23, 2020
- fix code documentation, requests are async and require await
