Marking `super()` calls `safe` by default
Adding test for `super()` auto-escaping
Expanding and exposing `proxyStr` as `markAsSafe`
Using `markAsSafe` to preserve `super()` calls
Converting `safe` filter to use `markAsSafe`
Reverting `getSuper`
Merge pull request #97 from andrewhayward/safe-super

Marking `super()` calls `safe` by default