Previously, the initial dark mode toggle would cause the default
settings to be saved, before font preferences ever loaded.

Closes #11

Moves the word count to the title bar subtitle.

v0.36, not v0.26

This checks the returned error code from `writeas` and skips the browser
opening if the status != 0.

Turned out I was saving the theme before I had a chance to read
the values saved from the last run.

Though there seems to be problems reading it back out.

Now supports multiple fonts and the caller can be written more naturally.

TODO ensure it is installed with the packaging.

Previously it gave this warning:

dpkg-source: warning: unknown information field 'Recommend' in input
data in package's section of control info file

I slipped on this one -- the correct font value for monospace posts is
"wrap" not "mono". "mono" is more for code or terminal output, not the
writing that users will do with this app.

This closes #1

Attempt to install the brand fonts (which are available on Debian),
and caught a copy-paste error from another project.

12min.

~ 5min?

8min.

10min.

5min.

4min.

8min.