Merge branch 'jagged_graph' into 'master'

Makefile

configs/bundle_ORCA4_corsika_sibyll_2-3c.toml

configs/bundle_ORCA4_data_v5-40.toml

configs/bundle_ORCA4_mupage_v5-40.toml

docs/orcasong.rst

examples/orcasong_example.toml

orcasong/core.py

orcasong/modules.py

orcasong/tools/concatenate.py

orcasong/tools/shuffle2.py

tests/test_concatenate.py

tests/test_core.py

tests/test_extractor.py

tests/test_from_toml.py

tests/test_modules.py

tests/test_postproc.py