attempted_murder opinions #223

The attempted_murder_of_spouse ("Attempted Murder of [My?] Spouse"), attempted_murder_of_vassal ("Attempted Murder of [My?] Vassal"), and attempted_murder_of_spouse_vassal ("Attempted Murder of [My Vassal's?] Spouse") opinion modifiers are never handed out (including from the "Assassinate" button).
This seems to be consistent with vanilla, but maybe it is an oversight and they should be hooked into event 11 (unsuccessful murder attempt fallout) since at least the first one has a counterpart ("Spouse Slayer") in event 10 (discovered successful murder).