What's Changed

• Don't require strscan unnecessarily by @deivid-rodriguez in #534
• Remove alias of load to unsafe_load by @miry in #539
• Add strict_integer option to parse numbers with commas as strings by @sethboyles in #537
• Remove bundled libyaml by @hsbt in #541
• Added dependabot.yml for actions by @hsbt in #546
• Bump actions/checkout from 2 to 3 by @dependabot in #547
• Update actions by @hsbt in #545
• Added condition for macOS homebrew by @hsbt in #548
• Add --with-libyaml-source-dir option by @nobu in #544
• Try bundled libyaml source if pre-installed is unavailable by @nobu in #550
• Propagate the host configuration to libyaml by @nobu in #551
• Remove unknown vendor for cross-compiling tool prefix by @nobu in #553
• Make a static library from PIC object files by @nobu in #554
• Propagate CC to libyaml by @nobu in #556
• Improve libyaml source downloading error messages by @XrXr in #557
• Update autoconf files bundled with yaml-2.5 by @nobu in #559
• Update Psych::VERSION to 4.0.4.dev, Add Ruby 3.1 & windows-2022 to CI by @MSP-Greg in #536
• scalar_scanner.rb - delete is typically 4 to 5 times faster than gsub by @MSP-Greg in #530
• MSP-Greg actions is now ruby organization by @hsbt in #560
• Fix libyaml download failure rescue under miniruby by @XrXr in #562
• Fix infinite loop bug after YAML_MEMORY_ERROR (psych issue #440) by @khanderson in #526
• Clarify tests about parsing aliases by @amomchilov in #568
• Raise specific error when aliases are not enabled by @amomchilov in #567
• Raise specific error when an anchor isn't defined by @amomchilov in #569
• Dump Date/DateTime as proleptic Gregorian date as well as Time by @nobu in #573
• Bump snakeyaml from 1.28 to 1.31 to resolve CVE-2022-25857 by @chadlwilson in #574
• Convert some of Parser#parse to Ruby by @tenderlove in #580
• Bump snakeyaml from 1.31 to 1.33 to resolve CVE-2022-38752 on JRuby by @chadlwilson in #585
• Removed the related files for downloading with extlibs by @hsbt in #588
• Cleanup bundled libyaml feature by @hsbt in #589
• Only skip specific failures on JRuby instead of ignoring the whole CI feedback by @deivid-rodriguez in #524
• Abandon when libyaml is not found by @nobu in #592

New Contributors

• @miry made their first contribution in #539
• @sethboyles made their first contribution in #537
• @dependabot made their first contribution in #547
• @XrXr made their first contribution in #557
• @khanderson made their first contribution in #526
• @amomchilov made their first contribution in #568

Full Changelog: v4.0.3...v5.0.0