Over the past two weeks I made some small fixes and incorporated the suggestions which Mac left during the review.
- Made file logging optional ([commit](https://github.com/sigp/lighthouse/pull/6339/commits/1cf9373943194a7bcc58cee04f2a28f11ba0ac10))
- Added support for`--logfile-debug-level,--debug-level` ([commit](https://github.com/sigp/lighthouse/pull/6339/commits/c16e5054db27ec0d1c62a380314123b43f7e2700) )
- When we were using `slog:o!` s ,we could get `service` name in the logs,but after removing those now we aren't getting the `service` names anymore.
One work around for this was adding bunch of spans all over the codebase and tweaking the logging layer, I've made the changes in some parts([commit](https://github.com/sigp/lighthouse/pull/6339/commits/4d1681f2229f35b6ddd27b2f9d1448dcec6c5508)),but it isn't the cleanest way and will require adding a lot more spans.
[Mac](https://github.com/macladson) said he'll try to find a better alternative,so I've paused adding the spans for now.
- Fixed up the simulator tests(now logs are showing up there properly) ([commit](https://github.com/sigp/lighthouse/pull/6339/commits/d84ba77c29084e92f169e3a0ba880e89ca244760))
- Some more minor fixes(commits:[1](https://github.com/sigp/lighthouse/pull/6339/commits/56852b0723ebfb50d76ab289e3a97479c44f8b19),[2](https://github.com/sigp/lighthouse/pull/6339/commits/938f173dad533088747dcffcee910fe56781d582))

In the upcoming weeks I'll be doing more changes which are(& will be) suggested.
And I'll try to finish up preparing the Final Update & the Slides for the presentation by the end of this week :)