Bullets in header are not well sized

[Icy-Thought]

Since I am not very proficient in emacs-lisp yet, I have decided to create an issue about this matter. shrface-bullets-bullet-list does not render properly when shrface-mode is enabled and I think I know the cause for this issue, which is the user defined font attribute(s).

The solution to this problem could be:

1. Creating a separate face attribute for the shrface-bullets-bullet-list (perhaps even rename to shrface-header-symbols or something similar)
2. Have the symbols use a the newly created face attribute with the default :family being set to "DejaVu Sans" for proper rendering.

Examples of what it currently looks like with VictorMono: (Shrface)

What it should look like: (Org-Mode)