elliptic-curve v0.11.0

[tarcieri]

Added

• ScalarCore<C> type (#732)
• PrimeCurveArithmetic trait (#739)
• SEC1 private key support (#762)
• Reduce trait (#768)
• Re-export ff and PrimeField (#796)
• Encoding bound on Curve::UInt (#806)
• scalar::IsHigh trait (#814, #815)
• Neg impl for NonZeroScalar<C> (#816)
• AffineXCoordinate trait (#817)
• serde support for scalar and PublicKey types (#818)

Changed

• Bump ff + group to v0.11 (#730)
• Make SecretKey::to_jwk_string self-zeroizing (#742)
• Use sec1 crate's EncodedPoint (#771)
• Make FromEncodedPoint return a CtOption (#782)
• Rust 2021 edition upgrade; MSRV to 1.56 (#795)
• Bump crypto-bigint dependency to v0.3 (#807)
• Use sec1 crate for pkcs8 support (#809)
• Bump spki dependency to v0.5 release (#810)
• NonZeroScalar is now bounded on ScalarArithmetic instead of
  ProjectiveArithmetic (#812)

Fixed

• Zeroize impl on NonZeroScalar (#785)