Bump numpy to 1.20.3 and remove fabio
Bump numpy version to 1.20.3 for Python-3.8 compatibility. Robert knows why, but doesn't tell us.
Also remove fabio, as we longer use it and gives us dependency hell.
Bump numpy version to 1.20.3 for Python-3.8 compatibility. Robert knows why, but doesn't tell us.
Also remove fabio, as we longer use it and gives us dependency hell.