Feature request: Support for Dashicons

This plugin is fantastic, and it made my life a whole lot easier. Thanks!

One request: Could a future version of the plugin please incorporate native support for Dashicons? Being able to use scalable icon fonts for buttons instead of raster graphics would be awesome, as would having the official WordPress icon set.

Thank you!

https://ww.wp.xz.cn/plugins/visual-editor-custom-buttons/