Added new unit: Shadow

data/units/Ghost.cfg

@@ -8,7 +8,7 @@ movement=8
 experience=30
 level=1
 alignment=chaotic
-advanceto=Wraith
+advanceto=Wraith,Shadow
 cost=20
 usage=scout
 alpha=0.5

data/units/Shadow.cfg

@@ -0,0 +1,25 @@
+[unit]
+name=Shadow
+race=undead
+image=undead-shadow.png
+hitpoints=44
+movement_type=undeadfly
+movement=8
+experience=30
+level=1
+alignment=chaotic
+advanceto=null
+cost=30
+usage=scout
+alpha=0.75
+skill=nightstalk
+unit_description="Souls blackened by evil, shadows roam the night attacking unsuspected foes. This evil creatures could hide in nighttime leving no trace of his presence."
+get_hit_sound=groan.wav
+	[attack]
+	name=claw
+	type=blade
+	range=short
+	damage=8
+	number=4
+	[/attack]
+[/unit]