This fixes #238
The title filter will now correctly lowercase the non first letter like the regular Python filter does. This fixes #251.
This also adds proper hashing and comparision support to undefined objects. This fixes #224
filters. This supercedes #66
…nge. Also changed a bare except to an except on the exception type.
…atible, documented it.
Choice and prefix loaders now dispatch source and template lookup separately in order to work in combination with module loaders as advertised.