Font for UTF-8 support

[fubian]

I tried the pdf_test.tb with osm data of munich (wget -O muenchen.osm "https://api.openstreetmap.org/api/0.6/map?bbox=11.54,48.14,11.543,48.145") but I got the following warning: PDF's built-in fonts have very limited support for internationalized text. If you need full UTF-8 support, consider using a TTF font instead.

Maybe it would be possible to replace the PDF build in font with an OS TTF font?