MARC parser

This code is intended to parse code in the MARC format[1] from the
Israeli National Library.

An example minimal file is included in the repository. A more complete
data set could be downloaded from
https://www.wetransfer.com/downloads/5ae37fc7985ddd1966b8c397cd2133a820160918061533/408158

The code is Python 3. You can run a test with:

  PYTHONPATH=$PWD python3 readers/xml_reader.py
  PYTHONPATH=$PWD python3 testers/factorytester.py

TODO: it seems to require adding the top-level directory to the
PYTHONPATH.

[1] http://www.loc.gov/marc/bibliographic/