Android's choices for font customisation can be limited, depending on
the vendor. Allow users to choose from a small collection of embedded
fonts, chosen by asking users for recommendations.
The font choice is implemented as a preference. Provide a custom dialog
that shows the fonts (in that font) so the user can see what they're
choosing between.
Ensure the font's license information is displayed in the "About"
section.
The previous code did not credit all third party code used in the app,
or provide access to the licenses.
Fix this by adopting the "aboutlibraries" library, which processes
dependencies at build time and generates a list of dependencies,
versions, and license information to display to the user.
Use this to also ensure that the non-source dependencies (artwork,
emoji) are given appropriate credit.
Nik Clayton