Add Bulgarian Cyrillic glyphs

[mjabbink]

Transferring from this issue #370 (comment)

The Bulgarian Minister of e-Government Bozhidar Bojanov has launched an initiative for Bulgarian institutions to use fonts that support Bulgarian Cyrillic. Source: https://www.facebook.com/bozhidar.bozhanov/posts/pfbid036YFX1SuEjFv4Mzg4WGfdnmCSG6yKT5f4wBokqjZigxCER6tkFdmrxzsD6xeedLBzl

The IBM Plex font is widely used in the Bulgarian web and I suggest you add support for the Bulgarian Cyrillic Script so that everyone can take advantage of it. You can read more about the loclBGR glyphs with examples and info on this article - https://www.lettersoup.de/what-shall-be-done-for-bulgarian-cyrillic-loclbgr/. More detailed information can be found here - https://www.fontfabric.com/blog/rounded-bulgarian-cyrillic-narrative-and-comparison/.

I will be more than grateful if you consider my proposal!

[BoldMonday]

Agreed. This will be nice to add.

[mjabbink]

WIP. Design completely and moving into production.

[BoldMonday]

Here’s a preview of the upcoming Plex Sans extension for Bulgarian Cyrillic forms.
Designed in close collaboration with Bulgarian type designer Lora Shtirkova.

[XenBG]

@BoldMonday @mjabbink

The Bulgarian Cyrillic looks stunning! Lora has done a great job. I can't wait to try it in a production environment. Is there any time frame when this version is expected to be available? Please, keep me in touch tagging me here. Thanks in advance!