* Added AlSb to predefined_materials.py (164) (by andrews-tuwien)
* allow parsing of SPEC files/scans with missing data entry
* implement the calculation of the anisotropic Poission ratio of materials
(139). Related to that a method in the DarwinModel was renamed and declared
internal.
* extend continuous integration tests by adding doctests
* directly depend on the lmfit package for implementation of our fitting
models.
* more possibilities to specify filename lists in getras_scan, getSeifert_map,
and getxrdml_scan
* allow bytes-stream instead of filename in XRDML
* enable setting free lattice parameters from the Crystal instance
* minor code improvements, forcing flake8 to pass upon merging a PR 149
* fix typo in Poisson ratio of GaInAs Darwin model (introduced in 1.7.4)
* make C-code respect the VERBOSITY. C-Code should now be silent with
VERBOSITY<INFO_ALL. Otherwise lots of info is printed. 145
* remove set_bit/clear_bit functions in favor of using enum.IntFlag
* use plain pytest in the CI integration (no code change in the package)
* remove build_doc target for setup.py, use sphinx (see builddocs pipeline)