Please add custom fonts

You allow to switch between several fonts most of which don’t have local character sets (even Avenir). This limitation became sadly usual on iOS, but it’s even more strange on desktop.
Please, add support for adding of several custom fonts from those installed in OS. I have beautiful light free fonts that will fit news reading ideally.

Thanks for services integration!

snusmumric about Leaf - RSS News Reader, v3.1