Modifying and building the font used for icons

[Keith94]

Initial steps

1. To edit the existing icons, download the current modernz-icons.json.
2. Go to https://icomoon.io/new-app.
3. Click on Import project at the top left.
4. Select the downloaded modernz-icons.json.
5. Load up the modernz-icons project.

Add an icon

1. First, find the SVG online of the icon(s) you want to add.
2. In IcoMoon, click on Import button (and Import tab) on the left side.
3. Select the desired SVG file or paste in the code for it.
4. On the right side under Glyph options, turn on "Show names" and "Show ligatures".
5. Under each icon in the main IcoMoon window, edit the ligature with the appropriate material_ or fluent_ prefixes and the _filled suffix if it's filled. The script will reference those in the local function build_icons section and display it.

Note: when adding a new icon, you may not be able to give it the same ligature as an existing icon. You may have to first change the existing ligature to something else, export and re-import the project in order to apply the desired ligature to a new icon.

Exporting

1. When done making changes, click on the export button near the top left,
2. In the export tab. click on the download button which exports the .ttf and .json project file.
3. Place the downloaded .ttf in mpv\fonts folder.
4. The project file is also used in the repo as a reference.