* Internal error conditions now raise IndieAuthException
* Bubbled unknown exceptions converted to generic IndieAuthException
* Exceptions passed to overridable handler, turned into response
* Wrote many more tests, fixed a variety of problems
* Created corresponding templates
* Changed how Server configuration works
* Ensured that rauthorization approval requests verify their indieauth parameters
* Wrote first passing test for Server, fixed a variety of small errors along the way
