v4.9.0: incorporate performance improvements and critical validation fix from v5

What's Changed

• upgrade v4 dep on v5 by @extemporalgenome in #201

Full Changelog: v4.8.0...v4.9.0

v5.6.1: better metrics validation and performance improvements

What's Changed

• datadog: maximum length checks name length, not buffer length by @kevinburkesegment in #199
• v5.6.1 by @kevinburkesegment in #200

Full Changelog: v5.6.0...v5.6.1

v4.8.0: re-implement v4 in terms of v5 (cross-compatibility)

What's Changed

• v4 in terms of v5 by @extemporalgenome in #184

Full Changelog: v4.7.4...v4.8.0

v4.7.2: various dependency updates and arch-specific fixes

What's Changed

• syscall.Sysinfo returns an uint32 on linux/arm, but uint64 otherwise by @noctarius in #151
• README.md: spacing fixes by @extemporalgenome in #154
• fix: update the x/exp package, and updated tagIsLess function by @needcaffeine in #152
• update testify to v1.8.1 to fix snyk issue by @erikdw in #142
• Update to latest fasthash dep by @deankarn in #130

New Contributors

• @noctarius made their first contribution in #151
• @needcaffeine made their first contribution in #152
• @erikdw made their first contribution in #142
• @deankarn made their first contribution in #130

Full Changelog: v4.7.1...v4.7.2

Lint fixes, set default branch to main

Merge pull request #149 from segmentio/lint-fixes

lint fixes

v4.7.0: dedup tags

Merge pull request #147 from segmentio/tag-sort-dedup

tag sort dedup

v4.6.3

Highlighted changes since v4.6.0:

• Histogram metrics named with configurable prefixes may be passed to Datadog
  as distribution metrics (#132)
• tagsBuffer sorts only when necessary, improving performance (#126)
• Conversion from byte slice to string in Prometheus metrics is updated to pass
  go vet under Go 1.16 (#133)
• Various fmt and linter warnings are cleaned up, and comments added (#127)
• README.md updated for versioned installation (#125)

v4.6.0

• Rename Go version tag from version to go_version in the procstats package. (#122)

3.1.0

• tag package before 4.0.0 release

v3.0.0

Third release.