v1.0.0-alpha.9

What's Changed

• Add support for recursive options in by @zanerock in #25
• Add BadCredentialsError by @zanerock in #27
• Reorganize code base files by @zanerock in #29
• Rework database errors into single set by @zanerock in #31
• Rework UnavailableError to be an ExternalServiceError subclass by @zanerock in #33
• Put all the exported identifiers into an appropriate category by @zanerock in #35

Full Changelog: v1.0.0-alpha.8...v1.0.0-alpha.9