• Added many type annotations internally, which may have an effect on CI/static analysis for people using Composer as a dependency. This work will continue in following releases
• Fixed regression in 2.1.6 when parsing classmaps with empty heredocs (#10067)
• Fixed regression in 2.1.6 where list command was not showing plugin commands (#10075)
• Fixed issue handling package updates where the package type changed (#10076)
• Fixed docker being detected as WSL when run inside WSL (#10094)