Sourced from icalendar's changelog.

2.12.3 - 2026-05-13

• Memory use optimization - Jared Menard
• Run CI against Ruby 4.0 - Artem Chubchenko

• e9a6818 Bump version to 2.12.3
• 0f68d60 Merge pull request #322 from edgartheunready/jm/add-guard-clause
• a25996f revert(deps): remove memory_profiler dev dependency
• 7f04f9f fix: move memory_profiler to a dev dependency
• a49f62d perf: add guard clause to avoid allocating unused hash
• 0f7bd6a perf(benchmark): add memory profiling harness for per-event calendar wrapping
• 0582b6f Merge pull request #321 from chubchenko/ruby-4.0
• c79c638 Remove bundler version
• f534050 Add Ruby 4.0 to CI
• See full diff in compare view

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