[css3-transitions] Interpolating 'other' value types

Right now, the Transitions spec still says that only certain types of
values can be transitioned.  Other types of values are ignored (merely
kept in the transition-property list to maintain relative list
positions).

I thought we'd agreed to let any property without specified transition
rules transition, with the rule that it's equal to the start value at
t=0 and the end value at t>0 (or the opposite, whatever)?  Part of the
reason we introduced the step timing-function was specifically to help
control this case, if I recall correctly.

I assume this is just a temporary omission, and the necessary edits
will be made in time?

~TJ