Field 'school' required instead of 'institution' for 'masterthesis'

[AlexanderWillner]

See subject, page 13 at http://www.lsv.ens-cachan.fr/%7Emarkey/BibTeX/doc/ttb_en.pdf, and line 60 in biblatex_check.py

[Pezmc]

The biblatex documentation reads:

mastersthesis Similar to @thesis except that the type field is optional and defaults to the
localized term ‘Master’s thesis’. You may still use the type field to override that.

Thesis is listed as:

Required fields: author, title, type, institution, year/date

I don't see reference to a school field, however it looks like BibTex uses school instead of institution.

Perhaps support could be added for school or institution to all types that currently expect institution

[AlexanderWillner]

Found in the documentation: '''Traditional BibTeX uses the field name school for theses, which is supported as an alias. See also §§ 2.2.5 and 2.3.4.'''