Merge branch 'mr-no-code-init' into 'main'

pyproject.toml

src/sgnts/base/__init__.py

src/sgnts/base/base.py

src/sgnts/sinks/__init__.py

src/sgnts/sinks/dump.py

src/sgnts/sinks/null.py

tests/test_buffer.py

tests/test_filtertools.py

tests/test_multi_sink.py

tests/test_slices.py