fix(compose): all properties not responding to changes
fix(compose): all properties not responding to changes

This appears to have been an oversite when implementing the compose
binding.

Fixes #10

cmichaelgraham/templating-resources,aurelia/templating-resources,aurelia/templating-resources,jdanyow/templating-resources,aurelia/templating-resources,hitesh97/templating-resources,marknutter/templating-resources,martingust/templating-resources