Use clap to accept CLI arguments
For #12 (closed).
This change allows the following flags and subcommands:
arboric -h
arboric --help
arboric -V
arboric --version
arboric help
arboric run
For #12 (closed).
This change allows the following flags and subcommands:
arboric -h
arboric --help
arboric -V
arboric --version
arboric help
arboric run