[pymvpa] vstacking fmri datasets removes dataset attributes

[Swaroop Guntupalli]

Hi Yarik & Michael,

When I vstack 2 fmri_datasets, the resulting dataset is devoid of the
dataset attributes such as  <a:
imghdr,imgtype,mapper,voxel_dim,voxel_eldim>.
I understand that if they do not match in the original datasets, it
might end up having to choose one (first one, may be?), but is there
some other reason for that? If not, can I add a feature request? :)

Thanks,
Swaroop