[0.8] x-template should provide bound values to elements' configure

[nevir]

Currently, <x-template> and friends stamp out elements and then update their properties to match the bindings. I.e. bound values are not available to those elements until after ready.

Ideally, we'd have values available to stamped out elements prior to that point. Maybe expose their bound values via configure?

[kevinpschaaf]

Fixed in d31279c