Minor: Modify hard-coded path.
Script to transform/clean metadata

The script does two things. First it combines the date/time/year columns
that come with the metadata into one column in the datetime format.
Second it runs regular expressions in order to remove extraneous
information from the names column (such as 'secretary', etc.) because
the meta data is not consistent. This results a little more than 1000
unique names when the original meta data had 2000 unique names, but
there are still many mistakes noticable by actually looking at the
list.