xrayutilities 1.6.0

This release contains several code rearrangements, minor fixes, and is Python3 only. The element database is no longer shipped with the package but is now created during the install process. Therefore the h5py, numpy, and scipy are now already needed during the setup process. pip handles this automatically so most users should not notice any difference!

A more complete set of changes can be found in the CHANGES.txt file [1] and the git log.

As usual every user is advised to upgrade. In order to obtain the new version go to sourceforge [2] or use PyPI [3]. Windows binaries and wheel packages are found on PyPI for 32 and 64-bit Python in versions 3.5, 3.6, and 3.7. There is also a conda-forge package [4] which should make installing for Conda users more straightforward.
If you encounter problems please report them on github or on the mailinglist.

[1] https://github.com/dkriegner/xrayutilities/blob/master/CHANGES.txt
[2] https://sourceforge.net/projects/xrayutilities
[3] https://pypi.python.org/pypi/xrayutilities
[4] https://github.com/conda-forge/xrayutilities-feedstock

(As a note to the future myself: The test coverage reported by tox of this release is 73%.)