Third-party notices

This software contains third-party libraries used under the terms of the following licences:

Library	Used under the terms of
aom	BSD 2-Clause + Alliance for Open Media Patent License 1.0
cairo	Mozilla Public License 2.0
expat	MIT Licence
fontconfig	fontconfig Licence (BSD-like)
freetype	freetype Licence (BSD-like)
fribidi	LGPLv3
gdk-pixbuf	LGPLv3
gettext	LGPLv3
giflib	MIT Licence
glib	LGPLv3
harfbuzz	MIT Licence
lcms	MIT Licence
libexif	LGPLv3
libffi	MIT Licence
libgsf	LGPLv3
libheif	LGPLv3
libjpeg-turbo	zlib License, IJG License
libpng	libpng License
librsvg	LGPLv3
libspng	BSD 2-Clause, libpng License
libtiff	libtiff License (BSD-like)
libvips	LGPLv3
libwebp	New BSD License
libxml2	MIT Licence
orc	orc License (BSD-like)
pango	LGPLv3
pixman	MIT Licence
zlib	zlib Licence

Use of libraries under the terms of the LGPLv3 is via the "any later version" clause of the LGPLv2 or LGPLv2.1.