v0.9.6-risczero.0

What's Changed

• Add Zirgen-based acceleration by @tzerrell in #1
• Use the new RSA extern by @tzerrell in #2
• Use risc0-bigint2 by @flaub in #3
• Update bigint2 impl with 4096 bit support by @austinabell in #4

This release adds support for the new bigint2 precompiles in risc0. In order to use this patch, use risc0-zkvm and risc0-build on version 1.2 or above with the unstable feature flag enabled.

Full Changelog: v0.9.6...v0.9.6-risczero.0