* Fix several broken raster nodes and clean up leftover old node system code * Migrate Brightness/Contrast to the new node macro, and fix it * Remove last usages of old_node_fn * Remove old_node_fn
* Fix several broken raster nodes and clean up leftover old node system code * Migrate Brightness/Contrast to the new node macro, and fix it * Remove last usages of old_node_fn * Remove old_node_fn