Support for multiple hyper keys

[yasamnoya]

Very appreciated for this useful tool. But I'm just wondering, is it possible to support setting multiple hyper keys and keymaps?

For example, enter 123456 with Tab + m,.jkl while HYPER2=KEY_TAB and still able to navigate with the default key bindings.

Thanks anyway.

[donniebreve]

I'm interested in transitioning this project into something that supports different layers, similar to most custom keyboard firmwares these days. Currently this project does not support multiple layers.