use setStringProperty method to set font face This should fix #569.
use setStringProperty method to set font face
This should fix #569.

ashhher3/koreader,mihailim/koreader,poire-z/koreader,pazos/koreader,frankyifei/koreader,NickSavage/koreader,Frenzie/koreader,poire-z/koreader,mwoz123/koreader,NiLuJe/koreader,Hzj-jie/koreader,koreader/koreader,NiLuJe/koreader,ashang/koreader,lgeek/koreader,koreader/koreader,Markismus/koreader,apletnev/koreader,robert00s/koreader,houqp/koreader,noname007/koreader,Frenzie/koreader,chrox/koreader,chihyang/koreader