Check individual files.
Files generated for the Mendeley Importer are under "The Chocolate-ware license".

Other libraries keeps their open source licenses (MIT, etc.).

# "THE CHOCOLATE-WARE LICENSE" (Revision 1):
# <carles@pina.cat> wrote this file. As long as you retain
# this notice you can do whatever you want with this stuff. If we meet some
# day, and you think this stuff is worth it, you can buy me a chocolate in
# return. Carles Pina Estany.
# (license based in Beer-ware, see
#           https://fedoraproject.org/wiki/Licensing/Beerware )
