v0.9.0

This is a maintenance release, with the exception of some minor function signature changes where snow::Error is now the error type instead of ().

Changes

• Updated all dependencies to latest
• Cleaner error handling with fewer unwraps, thanks to @BlackHoleFox
• Reduced number of dependencies for the crate by using curve25519-dalek directly and no longer depending on rand.

Full Changelog: v0.8.1...v0.9.0