[c12570] Add stacking exception for spells 50442 and 47941
[c12571] Allow spell effect 77 (ScriptEffect) and aura 226 (PeriodicDummy) to be handled by script library
[c12572] Add stacking exception for spells 53456 and 53421
[c12573] Improve target selection for TARGET_BEHIND_VICTIM
[c12574] Improve debug log output for learning/unlearning spells/skills
[c12575] Fix typos
[c12576] CMake: cleanup & strip trailing newline from