v0.1.0 — binary decoder

New: solana-go/binary

A minimal, reflection-free decoder for the little-endian ("bincode") and Borsh layouts used by Solana account state and instruction data. No encode side, no struct tags — callers read fields explicitly in layout order, so every read is a bounds check and a fixed-width load.

• Sticky-error Decoder: read a struct with straight-line calls and check Err() once at the end. Cold paths record bare sentinels; offset context is formatted lazily, keeping the hot reads inlineable and allocation-free.
• Reads: Uint8/16/32/64, Int64, Bool, Bytes(n) (zero-copy, with Copy variant), BorshString (zero-copy via unsafe.String, with Copy variant), typed PublicKey / Signature / Hash, Borsh Option and SPL COption tags (validated), canonical compact-u16 (shortvec) lengths, Skip / Pos / Len / Remaining.
• Sentinel errors matchable with errors.Is: ErrUnexpectedEOF, ErrInvalidTag, ErrNonCanonical, ErrOverflow.

Benchmarks vs gagliardetto/binary

Operation	fluxrpc	upstream	speedup
SPL token account decode (165 B)	36 ns, 0 allocs	150 ns, 1 alloc	4.1x
Metaplex metadata (zero-copy strings)	123 ns, 1 alloc	369 ns, 5 allocs	3.0x
Metaplex metadata (copied strings)	202 ns	336 ns	1.7x
compact-u16 (3-byte worst case)	6.5 ns	8.6 ns	1.3x

Verified by differential parity tests in benchcmp (identical decode results vs upstream on token account, mint and metadata fixtures, plus the full 0–0xFFFF compact-u16 range) and 700k+ fuzz executions with no panics.

Root package additions

• MPK(string) PublicKey — convenience alias for MustPublicKeyFromBase58.
• PublicKeySlice — []PublicKey, JSON-encodes as an array of base58 strings.
• TransactionFromBase58 — base58 counterpart to TransactionFromBase64.