- Make ultranest default, remove multinest.
- circumvent xspec numerical interpolation issues (Lepsilon parameter)
- Make multinest optional, allow ultranest
- Added PCA background models
- replace outdated progressbar with tqdm
- added PCA background model
- added galactic absorption fetcher
- added generic AGN fitting script
- added Chandra background model
- added Swift background model
- Python 3 support
- added corner plots
- added more convenience functions for plotting
- added Chandra background model
- added acceleration of models
- simple multinest interfaces for xspec and sherpa based on pyblocxs code