Puts FCHL code in it's own module/directory, similarly to the ARAD and Aglaia modules.
Changes ModuleNotFoundError to ImportError in aglaia.py (ModuleNotFoundError only exists in Python 3.6 or newer). We can revert this after Python2 is no longer supported, as it is a more correct error.
Fixes erroneous authors in some file headers.
Cleans up setup.py: Remove defunct compile info for FCHL, and reinstates the use of mkldiscover.
ModuleNotFoundErrortoImportErrorin aglaia.py (ModuleNotFoundErroronly exists in Python 3.6 or newer). We can revert this after Python2 is no longer supported, as it is a more correct error.mkldiscover.