v1.15.15

What's Changed

• zstd: Add delta encoding support by @greatroar in #728
• huff0: Reduce bounds checking by @greatroar in #734
• huff0: Assembler improvements by @greatroar in #736
• deflate: Improve level 7-9 by @klauspost in #739
• gzhttp: Add SuffixETag() and DropETag() options to prevent ETag collisions on compressed responses by @willbicks in #740
• zstd: Don't allocate dataStorage when using byteBuf by @klauspost in #741
• huff0: Speed up compression of short blocks by @greatroar in #744
• zstd: Handle dicts by pointer, always by @greatroar in #743
• fse: Optimize compression by @greatroar in #745
• Retract v1.14.1-v.1.14.3 by @klauspost in #742

New Contributors

• @willbicks made their first contribution in #740

Full Changelog: v1.15.14...v1.15.15

v1.15.14

What's Changed

• flate: Improve speed in big stateless blocks. by @klauspost in #718
• zstd: Trigger BCE by switching on lengths by @greatroar in #716
• zstd: Shave some instructions off the amd64 asm by @greatroar in #720
• export NoGzipResponseWriter for custom ResponseWriter wrappers by @harshavardhana in #722
• s2: Add example for indexing and existing stream by @klauspost in #723
• tests: Tweak fuzz tests by @klauspost in #719

New Contributors

• @harshavardhana made their first contribution in #722

Full Changelog: v1.15.13...v1.15.14

v1.15.13

What's Changed

• zstd: Add MaxEncodedSize to encoder by @klauspost in #691
• zstd: Improve "best" end search by @klauspost in #693
• zstd: Replace bytes.Equal with smaller comparisons by @greatroar in #695
• zstd: Faster CRC checking/skipping by @greatroar in #696
• zstd: Rewrite matchLen to make it inlineable by @greatroar in #701
• zstd: Write table clearing in a way that the compiler recognizes by @greatroar in #702
• zstd: Use individual reset threshold by @klauspost in #703
• huff0: Check for zeros earlier in Scratch.countSimple by @greatroar in #704
• zstd: Improve best compression's match selection by @greatroar in #705
• zstd: Select best match using selection trees by @greatroar in #706
• zstd: sync xxhash with final accepted patch upstream by @lizthegrey in #707
• zstd: Import xxhash v2.2.0 by @greatroar in #708

Full Changelog: v1.15.12...v1.15.13

v1.15.12

What's Changed

• zstd: Tweak decoder allocs. by @klauspost in #680
• gzhttp: Always delete HeaderNoCompression by @klauspost in #683

Full Changelog: v1.15.11...v1.15.12

v1.15.11

What's Changed

• flate: Improve level 1-3 compression by @klauspost in #678
• zstd: Improve "best" compression by @nightwolfz in #677
• zstd: Fix+reduce decompression allocations by @klauspost in #668
• zstd: Fix non-effective noescape tag by @klauspost in #667
• docs: Update s2 numbers by @klauspost in #664
• tests: Add zstd Reset and NewReader benchmarks. by @klauspost in #676

New Contributors

• @nightwolfz made their first contribution in #677

Full Changelog: v1.15.10...v1.15.11

v1.15.10

What's Changed

• Add Go 1.19 - deprecate Go 1.16 by @klauspost in #651
• zstd: Add DecodeAllCapLimit by @klauspost in #649
• flate: Improve level 5+6 compression by @klauspost in #656
• zstd: Improve "better" compresssion by @klauspost in #657
• s2: Improve "best" compression by @klauspost in #658
• s2: Improve "better" compression. by @klauspost in #635
• s2: Slightly faster non-assembly decompression by @klauspost in #646
• Use arrays for constant size copies by @klauspost in #659

Full Changelog: v1.15.9...v1.15.10

v1.15.9

What's Changed

• zstd: Fix crash on amd64 (no BMI) + Go fuzz test by @klauspost in #645
• zstd: Disable extended memory copies (amd64) by @klauspost in #644
• zstd: Allow single segments up to "max decoded size" by @klauspost in #643
• tests: Add codeql-analysis.yml by @klauspost in #642

Full Changelog: v1.15.8...v1.15.9

v1.15.8

What's Changed

• gzip: fix stack exhaustion bug in Reader.Read by @klauspost in #641
• s2: Add Index header trim/restore by @klauspost in #638
• zstd: Optimize seqdeq amd64 asm by @greatroar in #636
• zstd: Improve decoder memcopy by @klauspost in #637
• huff0: Pass a single bitReader pointer to asm by @greatroar in #634
• zstd: Branchless getBits for amd64 w/o BMI2 by @greatroar in #640
• gzhttp: Remove header before writing by @klauspost in #639

Full Changelog: v1.15.7...v1.15.8

v1.15.7

What's Changed

• s2: Fix absolute forward seeks by @klauspost in #633
• zip: Merge upstream by @klauspost in #631
• zip: Re-add zip64 fix by @klauspost in #624
• flate: Faster histograms by @klauspost in #620
• deflate: Use compound hcode by @klauspost in #622
• zstd: translate fseDecoder.buildDtable into asm by @WojciechMula in #598

Full Changelog: v1.15.6...v1.15.7

v1.15.6

What's Changed

• s2: Improve coding for long, close matches by @klauspost in #613
• s2c: Add Snappy/S2 stream recompression by @klauspost in #611
• zstd: Use configured block size by @klauspost in #605
• zstd: Fix incorrect hash table placement for dict encoding in default by @klauspost in #606
• zstd: Apply default config to ZipDecompressor without options by @klauspost in #608
• gzhttp: Exclude more common archive formats by @klauspost in #612
• s2: Add ReaderIgnoreCRC by @klauspost in #609
• s2: Remove sanity load on index creation by @klauspost in #607
• snappy: Use dedicated function for scoring by @klauspost in #614
• s2c+s2d: Use official snappy framed extension by @klauspost in #610

Full Changelog: v1.15.5...v1.15.6