v0.3.0: Rust 1.80.0

Upgrade to Rust 1.80.0 (rust-lang/rust@0514789) and add macOS support. For now, this includes a small LLVM patch that we're working on removing (#8).

v0.2.0: Rust 1.78.0

Update to Rust 1.78.0 (rust-lang/rust@9b00956) including LLVM 18. This version of LLVM includes experimental RV32E codegen support, so remove LLVM patches. Include a few important, unreleased Rust patches and a workaround for one issue.

v0.1.0

Initial release, based on https://github.com/succinctlabs/rust (https://github.com/succinctlabs/rust/releases/tag/succinct-v2024-02-24.1), Rust commit 82e1608dfa6e0b5569232559e3d385fea5a93112, LLVM 17.0.6 with RV32E patches from https://github.com/paritytech/rustc-rv32e-toolchain.