- Updated to include instructions on how to build libimagequant from
source.
- Removed backward compatibility build instructions (it's no longer
possible)
Running Tux Paint under macOS in Korean mode (and some other languages) causes
it to crash, unless "load system fonts" option is also enabled. Some
investigation showed the issue occurs when num_font_families is 0 in fonts.c.
This change removes the assumption from the code that assumes num_font_families
has at least one record.
