The event handling is deeply ingrained in the ui code, the commands are
focused around the ui code, in short splitting of the event handling and
command system from the ui is intentionally hard and in my opinion not
really worth it right now.
Compiling the whole tui stack, just to debug the lua command line seems
counterproductive to me. This allows to just compile the needed parts
for a basic lua repl.
As of yet the repl is just a mock-up, as the event handling can, as of
right now, not easily be separated from the tui.
To activate specific features add specify the on the cargo command line
like this:
```
cargo run --features "cli tui"
```
or add them to the `default` feature set in the `Cargo.toml`.
Benedikt Peetz