• fed6f37 prepare release 1.5.21
• b111e89 Initialization procedure has been simplified by removing the step
• 1cd2df4 fix issues/871
• dea5b95 minor - remove superflous call to Objects.requireNonNull
• 3cecf29 add comment for the TurboFilter list ACCEPT case
• 1497142 improve performance for 2 or more turbo filters
• 04a7ba5 most subclasses of UnsynchronizedAppenderBase do not need a reentry guard
• ab6a006 add maven cache to github CI, update .github/FUNDING.yml
• 2bf5557 fix failed LegacyPatternLayoutTest#subPattern test due to TZ discrepancies, u...
• 2ca8c52 update funding info
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