Using the Pillow wheel makes running Mirage fail with
ImportError: libxcb-2dfad6c3.so.1.1.0: ELF load
command address/offset not properly aligned
Probably has to do with us installing libX11/libXss libs.
Pillow 0.7+ no longer requires separate installation of libraries like
libjpeg, zlib, etc, for common desktop architectures at least
(which is why we keep them in the INSTALL.md manual install commands).
