In addition to the separate PR that removes distutils from setup.py, there were a number of distutils' LooseVersion() and StrictVersion() uses throughout the code. These have been replaced by packaging.version.parse. In addition, the code that added IAU 2015 resolution units to astropy <= 2.0 has been removed as we require astropy 3+.
In addition to the separate PR that removes distutils from setup.py, there were a number of distutils' LooseVersion() and StrictVersion() uses throughout the code. These have been replaced by packaging.version.parse. In addition, the code that added IAU 2015 resolution units to astropy <= 2.0 has been removed as we require astropy 3+.