The onloy TODOs that reference a meteor ticket are: 
`# TODO: Misusing data context for a variable, use template instance instead: https://github.com/meteor/meteor/issues/1529`

But the ones with
`TODO: Remove when we will be able to access parent template context`
do not.

I'm not sure if this is the same issue? The ticket is about templates not being accessible to helpers, so we use data context, but here it's about parent templates not being accessible from child templates.