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