A lua based plugin that displays available keybindings

What? A plugin that can help remember or show existing keybindings that written in lua.

Why? There are existing viml based plugin like vim-which-key and vim-leader-guide but hard to setting if your configuration is lua based. Main problem I have found is existing plugin using viml dictionary that can be hard to translate to lua. Another reason we need this new plugin is the existing implementation have less configuration in user interface. I hope new implementation have better looking than existing plugin.