Header fonts don't have support for umlauts (german)

[Tjorbenn]

Hi, thanks for this awesome Obsidian Theme!

Just one little issue: The header fonts that come with this theme do not support umlauts (probably other special characters as well).

Here is an example:

Maybe you can add a font that supports these special characters :)

Cheers, Tjorben

[thegiftofgabes]

Or allow us to pick custom fonts for headers.