return the request itself (optionally wrapped in another type)
add functionality to instantiate a request/wrapper
run_request takes requests by reference
shared smart pointer/interior mutability?
make bofh/bofh-cli one crate?
internal commands: commands, script, source, logout/quit, help
raw (cli argument or repl command?)
help_ref vs arg_type when hinting arguments? or perhaps actual help text?
highlighting
parentesgrupper
tab completion