Personal customization of the Iosevka font for my own use.

This variant is mainly based on the JetBrains style, with more curly italics and additional ligatures enabled.

1. Ensure that nodejs (≥ 12.16.0) and ttfautohint are both installed and accessible from PATH. Note that the version of nodejs available in the apt package manager might be too old on Ubuntu-based systems.
2. Clone the Iosevka repo somewhere, e.g. git clone --depth 1 https://github.com/be5invis/Iosevka.
3. Copy this repo's private-build-plans.toml into the Iosevka folder produced by the step above.
4. In that folder, run npm install to get all NPM dependencies.
5. Then, run npm run build -- ttf::iosevka-nova to build the TTF files.
6. The generated TTF files will be located in dist/iosevka-nova/.