R parity of morie.entheo_dmt.dataset_overview. Returns a
RichResult-style summary of the on-disk DMT_Imaging mirror.
Examples
try(morie_entheo_dataset_overview())
#> Error : DMT_Imaging dataset not found. Clone https://github.com/timmer500/DMT_Imaging.git or set the MORIE_DMT_IMAGING_ROOT environment variable.
