- Expanded existing test coverage.
- Verified that neither Diffusion nor Phriction can generate URIs with backslashes (they are escaped in Diffusion, and removed by slugging in Phriction).
- Logged in with Facebook (OAuth2 submits a form to the external site, and isn't affected) and Twitter (OAuth1 redirects, and is affected).
- Went through some local redirects (login, save-an-object).
- Verified file still work.