Re-export `slog`

In general I think it's a good practice to re-export types from dependencies that are part of a crate's public API. Currently, slog::Logger is part of the public API for ConfigLogging::to_logger and ServerBuilder::new, but is not re-exported from slog. So as a user of dropshot, if I want to make a function that wraps (in my case) ConfigLogging::to_logger, I have to specify slog as a direct dependency of my crate alongside dropshot and ensure I manually keep the versions of <my_crate> > slog synced with <my_crate> > dropshot > slog. It's not impossible, but it is tedious.

It looks like dropshot currently re-exports one dependency: semver. Could the same be done for slog?

Separate, but related: when re-exporting multiple dependent crates, you may want to put them in a module together. I've seen it called deps elsewhere. Your call!

Also, thanks for building dropshot! I'm really enjoying using it so far!

Start by locating the public exports and the signatures of ConfigLogging::to_logger and ServerBuilder::new, which expose slog::Logger. Check how semver is currently re-exported, then verify that downstream users can refer to the slog types through dropshot without a direct slog dependency.