Patches/9.13

• SOAP support for Apple Mac: if you see an error like "`required filter 'deflate' is not registered`" when trying to use SOAP, get libhdf5.7.dylib and libhdf5_hl.7.dylib and put them in `/Library/modeller-9.13/lib/mac10v4/`, overwriting the original files there.

The patches below can be applied to Modeller 9.13 to fix some minor problems. (Use the Unix `patch` command, or apply them by hand.)

(!) The patches are listed in chronological order (oldest first), so you should apply them in this order to avoid problems.

• density-origin.patch: Make the px, py and pz attributes of `density` objects visible to Python.
• density-shape.patch: Make the shape of `density` object grids visible to Python (as `d.grid.shape`).