Allow keys in calls

[dikmax]

Same way as keys can be attached to html elements, they can be attached to template calls too.

This is valid:

{call .template key="$id"}
  {param someParam: 'value' /}
{/call}

Now parser shows error " expected, got 'key'"

[crdev]

Hey Maxim,

Could you perhaps point me to the relevant documentation? Could not find in that for the Closure Templates...

[dikmax]

go/soy/reference/key