Kill the bools

This is a huge pull request -- and will get bigger. Creating the request so we can easily track it, and the issues it resolves.

Closes #124: Cleans up our use of critical/debug/warning
I'm a little iffy on this one -- InvalidOptions here doesn't mean invalid for the actor, but invalid for RightScale. If you're ok with this, we need to improve the docstring on InvalidOptions exception to specify this flexibility.