v0.7.0

v0.7.0 - 2026-05-16

Performance

• Periodic DEFLATE fast path: Detect periodic inputs and emit specialized LZ77 streams. In the feature/bench v0.7.0 benchmark diff, sequential fzip compression improves across raw DEFLATE 7.89 µs -> 4.59 µs (41.83% faster) for 1K and 138.26 µs -> 84.96 µs (38.55% faster) for 100K; GZIP 8.71 µs -> 5.28 µs (39.38% faster) for 1K and 211.66 µs -> 156.19 µs (26.21% faster) for 100K; Zlib 8.36 µs -> 4.95 µs (40.79% faster) for 1K and 177.20 µs -> 124.35 µs (29.83% faster) for 100K.
• Inflate-friendly large periodic output: Large periodic streams now use fixed-Huffman, non-overlapping matches to avoid the decompression regression from the initial fast path. The same benchmark diff shows 100K fzip decompression improvements for raw DEFLATE 20.70 µs -> 16.22 µs (21.64% faster), GZIP 90.55 µs -> 84.13 µs (7.09% faster), Zlib 59.50 µs -> 55.36 µs (6.96% faster), and auto-detect 88.36 µs -> 83.16 µs (5.89% faster).
• Compression-size tradeoff: The fixed-Huffman large-periodic path improves runtime while increasing 100K sequential output size from 1127 -> 1263 bytes for raw DEFLATE, 1145 -> 1281 bytes for GZIP, and 1133 -> 1269 bytes for Zlib.