Confusing statements about photoatomic data library

[yrrepy]

It is suggested confusingly that the IncidentPhoton from_ace class will only work with eprdata14 and later mentions eprdata12+. Somewhat inconsistent/unclear wording about what recent version will work.

https://github.com/openmc-dev/data/blob/master/convert_mcnp71.py https://github.com/openmc-dev/data/blob/master/convert_mcnp70.py

Photon.py suggests eprdata14+ https://github.com/openmc-dev/openmc/blob/develop/openmc/data/photon.py