Bumping version to 0.3

Rather than resetting to 0.1 after the refactor, let's just
bump up the version number.
Fix creation of blank URI
Fixing missing reference to self
Getting the first example to pass
Fixing fallout over uri normalization

I decided to not differentiate between no query and a blank query (at
least for now), and normalize the URI. This caused some test failures
that need to be rectified.