The minimal mapping is intended to give an idea of what a basic
extract could look like.

Table parsing was changed to not go by column-index, but rather
by column-heading.

Not all records exported from Alma will have an AC-number in 009
plus this makes the Notebook useable for a wider audience. Using
MMS-ID instead of AC-number as this is the system's default uid.

Notebook could use any unique ID really, so added information on
what is used and how to use other unique IDs.