Release v0.7.87

What's Changed

• frank/prediction markets by @soundsonacid in #197
• Use a typed dict for the cache type by @SinaKhalili in #202
• Update Drift User by @SinaKhalili in #203

New Contributors

• @SinaKhalili made their first contribution in #202

Full Changelog: v0.7.81...v0.7.87