What's Changed

• Remove unnecessary boxing by @vlsi in https://github.com/apache/jmeter/pull/541
• Replace Spotless with Autostyle by @vlsi in https://github.com/apache/jmeter/pull/549
• Add Travis CI job to test JMeter with IBM s390x by @namrata-ibm in https://github.com/apache/jmeter/pull/550
• Bug 64091 - Precise Throughput Timer might produce less samples when low test duration is used by @vlsi in https://github.com/apache/jmeter/pull/553
• Color test results in Gradle output by @vlsi in https://github.com/apache/jmeter/pull/554
• Update Gradle test output formatting by @vlsi in https://github.com/apache/jmeter/pull/555
• Bug 64142 - Use gray icons for disabled elements in the tree by @vlsi in https://github.com/apache/jmeter/pull/558
• Add ExecutionMode.SAME_THREAD to JMeterSerialTest to ensure the tests are not executed concurrently by @vlsi in https://github.com/apache/jmeter/pull/560
• Add darklaf look and feel by @vlsi in https://github.com/apache/jmeter/pull/556
• Add screenshots for Darklaf look and feel by @vlsi in https://github.com/apache/jmeter/pull/562
• Use SVG icon for splashscreen by @vlsi in https://github.com/apache/jmeter/pull/565
• On the fly look and feel updates, change zoom hotkey to ctrl+alt+wheel by @vlsi in https://github.com/apache/jmeter/pull/566
• Show context menu for the full row, not just for the tree label by @vlsi in https://github.com/apache/jmeter/pull/564
• Improve toolbar border by @weisJ in https://github.com/apache/jmeter/pull/568
• Support SVG icons for the toolbar by @vlsi in https://github.com/apache/jmeter/pull/570
• Remove etched borders. by @weisJ in https://github.com/apache/jmeter/pull/569
• Overhaul the approach for using custom styles in JMeter components by @vlsi in https://github.com/apache/jmeter/pull/572
• Improve the startup time: skip test plan UI initialization by @vlsi in https://github.com/apache/jmeter/pull/573
• Upgrade Gradle: 6.1 -> 6.3 by @vlsi in https://github.com/apache/jmeter/pull/577
• Implement per-field undo/redo by @vlsi in https://github.com/apache/jmeter/pull/576
• Add icon for JetBrains Toolbox by @vlsi in https://github.com/apache/jmeter/pull/579
• Update Darklaf: 1.4.3.1 -> 2.0.2 by @vlsi in https://github.com/apache/jmeter/pull/582
• Speed up DNSCacheManagerSpec + simplify some code in DNSCacheManager. by @ham1 in https://github.com/apache/jmeter/pull/580
• Fixed duplicate theme name in the changelog by @weisJ in https://github.com/apache/jmeter/pull/584
• Add a 'Median' field to the dashboard and make the response time percentile fields support floating-point numbers by @keithmork in https://github.com/apache/jmeter/pull/567
• Added JEXL3 as a syntax alias for JSyntaxTextArea by @drivera-armedia in https://github.com/apache/jmeter/pull/585
• UI improvements. by @weisJ in https://github.com/apache/jmeter/pull/581
• Bug 64407 - Improve JMS Publisher UX by @ubikloadpack in https://github.com/apache/jmeter/pull/586
• Bug 64408 - Improve JMS Subscriber UX by @ubikloadpack in https://github.com/apache/jmeter/pull/587

New Contributors

• @namrata-ibm made their first contribution in https://github.com/apache/jmeter/pull/550
• @keithmork made their first contribution in https://github.com/apache/jmeter/pull/567
• @drivera-armedia made their first contribution in https://github.com/apache/jmeter/pull/585

Full Changelog: https://github.com/apache/jmeter/compare/rel/v5.2...rel/v5.3