1.4.0 - Doubles throughput on modern x86_64 systems to >100GiB/s

This release leverages the VPCLMULQDQ AVX512 support released in Rust 1.89.0, delivering a 2X throughput increase on modern x86_64 systems (Intel Ice Lake and later, AMD Zen4 and later).

• Enable VPCLMULQDQ support on Rust 1.89+ by @onethumb
• Support custom CRC parameters by @onethumb
• Add checksum command-line utility by @onethumb
• Remove bindgen by @yoshi-taka

Full changes