Made template-infuse into an ES2015 module. Refactored `_infuseAttribute`. Added the `isProperty` method to determine if a given attribute should also be considered a property. If this method returns `true`, the element's property is also set when calling `infuseAttribute`. Added the `TemplateInfuse.dreV1Caveat` boolean flag to fix the caveat in custom elements V1 in the "document-register-element" polyfill. Added the `initialize` method to the class returned by `TemplateInfuse.Mixin`.
Made template-infuse into an ES2015 module.
Refactored `_infuseAttribute`.
Added the `isProperty` method to determine if a given attribute should also be considered a property. If this method returns `true`, the element's property is also set when calling `infuseAttribute`.
Added the `TemplateInfuse.dreV1Caveat` boolean flag to fix the caveat in custom elements V1 in the "document-register-element" polyfill.
Added the `initialize` method to the class returned by `TemplateInfuse.Mixin`.

serg-io/template-infuse