Fixes and additions

[jhossbach]

No description provided.

[jhossbach]

I have a question regarding the use of ampersands &, I often come across \& in my .bib files when an ampersand is used, JabRef doesn't seem to recognize that journaltitle if the name is not exactly the same. Do we need to add entries for all occurences of & and \& and and as well?

[Siedlerchr]

Thanks for being patient, this is a good question. I think the journal abbrev handling should be improved so that ampersands and escaped ampersands are considered for equality check

[jhossbach]

The logic you mentioned should be adressed but this PR is good to go nevertheless. You might change the header level LICENSE.md to fix your failing tests though

[koppor]

We should do unescaped & only. JabRef should generate \& in the .bib file.

Reason: The abbreviation file should be usable outside of JabRef.