Repository navigation

docs(changelog): rewrite the v2.1.0 section as release notes #1138

Job	Run time
Detect changed paths	7s
Architecture and Documentation Guards	26s
Weekly Benchmark Diff	0s
CI Gate	2s
Binary Compatibility (japicmp vs pom baseline)	0s
Performance Smoke Check	-1s
Examples Generation Smoke Test	-1s
Build and run tests (JDK ${{ matrix.java }})	-1s
	32s