Relating to self-defense, to amend Section 13A-3-23, Code of Alabama 1975, to provide a person's use of physical force in defending himself, herself, or another person is presumed reasonable; to further provide for the immunity received by a person whose use of physical force on another person is justified self-defense; to shift the burden of proving a person's use of physical force is not justified to the state; and to make nonsubstantive, technical revisions to update the existing code language to current style