[pyblio] Ampersand

[<jue...@t-...>]

Hi,

With pyblio 1.2.9, ampersand characters are not escaped in some fields.=20
E.g., if I insert the journal title "Markt & Analyse", it is saved as
  Journal        =3D {Markt & Analyse}
instead of
  Journal        =3D {Markt \& Analyse}
which results in a "Misplaced alignment tab character &" LaTeX error.

The same applies to the publisher, series and address fields. In the title=
=20
field, however, the ampersand is correctly escaped.

Regards,
J=C3=BCrgen