Additional API (backwards compatible)
- Injects `$transclude` (see directive controllers) as 5th argument to directive link functions.
- `$transclude` takes an optional scope as first parameter that overrides the
bound scope.
Deprecations:
- `transclude` parameter of directive compile functions (use the new parameter for link functions instead).
Refactorings:
- Don't use comment node to temporarily store controllers
- `ngIf`, `ngRepeat`, ... now all use `$transclude`
Closes#4935.
90f87072e8