Split imdl into a binary, `src/main.rs`, and a library, `src/lib.rs`.
This will enable benchmarking, fuzz testing, and anything that requires
making `imdl` functions accessible another crate.
type: reform
Shell completion scripts can be generated for `bash`, `elvish`, `fish`,
`powershell`, and `zsh` with the `completions` subcommand:
$ imdl completions --shell zsh > imdl.zsh
The same scripts are available in the `completions` directory. Please
refer to your shell's documentation for more information on how to
install and use completion scripts.
type: added
