v0.1.3

Other

• allow dead Tier::Ignored variant
• drop no-op u32 mask + replace MSRV-1.87 is_multiple_of
• cargo-fuzz harness with libjpeg-turbo cross-decode oracle
• drop unused loop binding in K.4 test
• align QE_TABLE comments to column 28 to satisfy rustfmt
• fmt QE_TABLE column alignment to single-space
• add SOF9 arithmetic-coded JPEG entropy decoder
• cargo fmt rustfmt 1.95 if-expression wrap
• fancy chroma upsampling + green-channel rounding fix
• emit Yuv411P for JPEG 4:1:1 sampling (luma 4x1)
• cargo fmt: collapse single-line panic! in tests/docs_corpus.rs
• wire docs/image/jpeg/ fixture corpus into integration suite