oxide-auth-db 0.2.0

An implement of DB registrar with configurable databases.
Documentation
# 0.2.0

- Bump `r2d2_redis` to `0.14`.
- Remove indirectly used dependencies. If you run into troubles you may need to
  manually add them to *your* project to enforce versions or features. No
  longer directly depends on: `rand`, `reqwest`, `rust-argon2`, `r2d2`, `tokio`.