Merge branch 'pp_docs' into 'dev'

src/agora/io/signal.py

src/aliby/io/dataset.py

src/aliby/pipeline.py

src/aliby/tile/tiler.py

src/aliby/tile/traps.py

src/extraction/core/extractor.py

src/extraction/core/functions/cell.py

src/extraction/core/functions/defaults.py

src/extraction/core/functions/loaders.py

src/extraction/core/functions/math_utils.py

src/extraction/core/functions/trap.py

src/postprocessor/grouper.py