long lost $control
Merge branch 'lab-8-directives-solved' into lab-9-filters

* lab-8-directives-solved:
  long lost $control
Merge branch 'lab-9-filters' into lab-9-filters-solved

* lab-9-filters:
  long lost $control
Merge branch 'lab-9-filters-solved' into lab-10-animations

* lab-9-filters-solved:
  long lost $control