Tested on Rust 1.39.
Extracting texts from users `id1` and `id2` from a chat dump:
```sh
cargo run --release --example cli -- -o messages.txt --only-include-names=id1,id2 -- messages.html
```
To see all available options, run:
```sh
cargo run --release --example cli -- --help
```
See `examples/cli.rs`.