----------------
- Support i18n:domain and i18n:translate for internationalization.
[davisagli]
- When an error is encountered while parsing a supermodel, the exception
now provides the filename, line number, and source of the part of the
model that was being processed. Inclusion of the line number and source
requires lxml.
[davisagli]
- Add model.Schema and directives to avoid grok dependency.
[elro]