feedback:
- The `--output`/`-o` option is confusing. It doesn’t name the output
itself, but rather a directory into which the single item of output
will be placed. Typing `-o .` all the time is just annoying. It’d
be more logical to rename this option to `--dest`/`-d` and to make it
optional, with a default value of `.`.

We will rename the option from "--output" / "-o" to "-dest" / "-d" as requested.
We will change this from required option to optional and change the default to ".".