The theme faces are downloaded on first use from Google Fonts
(https://github.com/google/fonts), commit
e44c4b011a820c2cbe2fd2cfa8052037d7edb571:

- Comic Neue Regular and Bold (ofl/comicneue), used by the sketch theme.
  Copyright 2014 The Comic Neue Project Authors
  (https://github.com/crozynski/comicneue)
- IM FELL English Roman, Italic and SC (ofl/imfellenglish,
  ofl/imfellenglishsc), used by the quill theme.
  Copyright (c) 2007 Igino Marini (www.iginomarini.com), with Reserved Font
  Name IM FELL English

These fonts are licensed under the SIL Open Font License, Version 1.1
(https://openfontlicense.org); the licence text is published upstream as
OFL.txt in each family's folder.
