v26.1.0

Changelog 26.1.0 (2026-04-30) Features Update the core ABI helper traits and APIs. Custom ABI implementations now use AbiSize::HEAD_SIZE , payload_size , Decode::decode_payload , and AbiSpan::payload_end ; encoders are created with a fixed output size, and root versus field encoding is split into explicit helpers such as encode_alloc and encode_single_root_alloc . ( #1404-abi ) Added…