Issue title: Add keywriter fork with decreased font size
 Issue body: Would be great to have this rm keywriter fork with smaller font size for edit mode:
https://github.com/danschrage/remarkable-keywriter

There have been few more people who wanted to have a writing experience with smaller font size.
 Comments: 
 Comment 0: It would probably make more sense to ask for that change to be upstreamed, or configuration added to tweak it per install.
 Comment 1: Seems to have been added to upstream. Keeping this open as a reminder to update our package.
{'source': 'GithubIssues', 'repo_name_with_owner': 'toltec-dev/toltec', 'issue_id': 1118691768, 'repo_stars': 444.0}