Add Optician Sans

A free font based on the historical eye charts and optotypes used by opticians world wide, created by [ANTI Hamar](https://instagram.com/anti_hamar) and typographer [Fábio Duarte Martins](https://scannerlicker.net/).

License from [their website](https://optician-sans.com/):

> Feel free to use this typeface on your website, print, startup or organisation. But don’t be a jerk and distribute or sell the typeface as if it was your own. A link back to this site from your website would be really much appreciated! And let us know if you use this typeface for a project you think we should know about.

And the [Direct Download Link](https://optician-sans.com/font-files/v2/OpticianSans.zip).

**Edit**: Optician Sans is now licensed under the OFL.