qala-cli-0.1.0 is not a library.
the qala command-line interface.
a clap-based front end for the qala compiler: run compiles and executes
a program, check type-checks it without running, build writes a compiled
artifact. clap generates --version and --help. the compiler does the
work; this crate owns argument parsing, file IO, the stdout/stderr split,
and exit codes.