Accessing template helpers from code.
Correctly use dynamic template.
Fixed editable.
Focus delays.
Correctly validate arrays as arguments.

With previous version of middleware package, array of document IDs was
seen as not being checked because array was not === equal to what was
passed to middleware (_params vs. args).
Simplifying code because rendered is called only once.
Access and group ported.
Style.
Make sure helpers are operating on documents.