sort for fuzzy matching
multi-account support

-u, --username:
Optional. Allows users to specify the username, if using with multiple accounts and configuration files

Fixes #1
Merge branch 'matchorderfix'
configure improvements

- Adds numbered choices for "?" config options
- Improved handling of invalid entries
Two-factor authentication support

This commit adds two-factor support for the configure method. The
packaged-in WebService::Linode module has also been bumped to
version 0.18.
General cleanups and style fixes

Just a few style fixes in a couple of spots. This also catches
a few edge cases during the authentication/two-factor process
and handles them a bit better.
Release 1.1.0