The digital linear filters are outsourced to libdlf, reducing the lines of code of empymod by over 50%. In addition to the new requirement libdlf, scooby is added as a requirement. Most user questions can be adressed much better if they provide the output of empymod.Report() - however, most users do not have scooby installed. Having it as a requirement will make support smoother. Both new requirements are very lightweight modules, having at most numpy as a dependency. Filters: The digital linear filters are outsourced to libdlf (https://github.com/emsig/libdlf). Note: How to access filters changed! The old way still works, with a deprecation note stating how to change your code. The old way will be removed in v3.0. Examples: @efinden expanded the "Cole-Cole IP" example. Maintenance: Bumped the minimum requirements to: Python 3.9 SciPy 1.9 Numba 0.53 libdlf (NEW requirement) scooby (NEW requirement) Testing: added Python 3.12, dropped Python 3.8. Fix remaining outdated python setup.py commands. Many small things to keep the package updated.