- Some attribute values (ie wait:tomorrow) when parsed, need to take
the data type of the attribute (date) and use that as an implied type
of the value (date literal).
- Arg renders type-less and category-less values as "", instead of "none".
Cleaner output.
- Arg now has a _value member that reflects the value in play, rather
than the input _raw value. Only _value is used in eval.
- DOM expansion capabilities are now controlled by rc.dom.
- The A3::Arg object is very similar to the E9::Term object, so the two are
being merged. First step is to separate A3::Arg into it's own space, then
add a _type member.
- Added more valid stop characters as terminators for various arg types.
- Removed redundant E9 special handling for dates, which is already built in
to the Date object.
