olaf2 0.0.3

Convenient CLI authentication using OAuth2
# Olaf2 CLI Authentication Helper

This is a pretty hacky proof of concept to enable convenient authentication
of command line applications using a third party OAuth provider.

For more detailed information, see the [documentation](https://docs.rs/olaf2).

This also doesn't fully work via crates yet, since we depend on the unpublished
github version of [oauth2-rs](https://github.com/ramosbugs/oauth2-rs).

Also, this was an experiment in using edition 2018, so things may not properly
work.

Hopefully though there are some useful techniques/concepts here that can be
borrowed.