Example "Command Chaining" doesn't work

[dvp2015]

The example "Command Chaining" in the online documentation doesn't work:

╭─ Error ──────────────────────────────────────────────────────────────────────╮
│ Unknown option: "--flag".                                                    │
╰──────────────────────────────────────────────────────────────────────────────╯

Process finished with exit code 1

The execution fails on argument parsing and doesn't reach 'main' function. Using main() directly

    # app.meta(["foo", "123", "AND", "foo", "456", "AND", "bar", "--flag"])
    main("foo", "123", "AND", "foo", "456", "AND", "bar", "--flag")

produces the expected result. But it looks like "app.meta()" is to be used in that case.

[BrianPugh]

Seems like those docs were a little stale; I updated them in #214 and they should work now. Thanks for opening this issue!