v0.4.1

• Increased transition constraint exemption limit by 1.
• Implemented custom doubling for f64 and f62 field.
• Moved f64 field arithmetic to Montgomery form (constant time).
• Updated MDS matrix and related-multiplication routine for Rp64_256 hash function.
• Improved performance of Matrix::interpolate_columns function.
• Added ability to "unbatch" a BatchMerkleProof (via BatchMerkleProof::into_paths() method).
• Changed visibility of FRI utils (made them public).
• Added support for FRI folding factor of 2 (in addition to 4, 8, and 16).

v0.4.0

• Added support for Randomized AIR (with example).
• Added support for custom number of transition constraint exemptions.
• Enabled transition constraints of degree n + 1 when blowup factor is n.
• Moved trace and constraint commitment construction into separate functions in the Prover trait.
• Introduced Matrix struct in the prover which is used as a backing type for trace and constraint evaluations.
• Added ExtensionOf trait and implemented it for all supported fields.
• Sped up inversion in f64 field by using inversion method based on Fermat’s little theorem.
• Implemented Randomizable trait for u32, u16, and u8 types.
• [BREAKING] AirContext::new() now requires num_assertions parameter.
• [BREAKING] Various interface changes in the Air trait to support multi-segment traces.
• Increased min version of rustc to 1.60.

v0.3.0

• Added f64 field.
• Added support for cubic field extensions.
• Added an implementation of Rescue Prime hash function in f64 field.
• Switched to Rust 2021 and increased min version of rustc to 1.57.
• [BREAKING] Renamed Air::BaseElement to Air::BaseField.
• [BREAKING] Replaced prover::prove() function with Prover trait.
• [BREAKING] Split ExecutionTrace struct into Trace trait and TraceTable struct.

v0.2.0

• Added Blake3_192 as hash function option.
• Implemented high-performance version of Rescue Prime hash function.
• Removed alloc feature in favor of turning on no_std via --no-default-features flag only.
• Moved rand dependency to dev-dependencies only and removed hashbrown dependency.
• Increased min version of rustc to 1.54.