* Remove wait_for & associated params
* Upgrade command dict to top-level, remove more wait_for accessories
* We don't need all this anymore
* Update docs
* Update tests to new argspec
* Be a little more explicit about sendonly
Also remove reference to the word provider.
* Add example of prompt and answer
This change corrects problems reported by the `yamllint` linter.
Since key duplication problems were removed in 4d48711, this commit
mainly fixes trailing spaces and extra empty lines at beginning/end of
files.