New upstream version 3.0.1

.github/workflows/ci.yaml

.github/workflows/release.yaml

.phive/phars.xml

.psalm/baseline.xml

.psalm/config.xml

ChangeLog.md

README.md

build/scripts/extract-release-notes.php

infection.json5.dist

phpstan.neon

src/ClassMethodUnit.php

src/ClassUnit.php

src/CodeUnit.php

src/CodeUnitCollection.php

src/CodeUnitCollectionIterator.php

src/FileUnit.php

src/FunctionUnit.php

src/InterfaceMethodUnit.php

src/InterfaceUnit.php

src/Mapper.php