Rename Particle.isTransparent => hasAlpha

Followup to #145
- Rename setAlpha to setColorAlpha
- Rename setter parameters to value

mappings/net/minecraft/client/particle/Particle.mapping

@@ -59,7 +59,7 @@ CLASS bnl net/minecraft/client/particle/Particle
 		ARG 1 green
 		ARG 2 blue
 	METHOD a setMaxAge (I)V
-		ARG 0 maxAge
+		ARG 0 value
 	METHOD a setBoundingBox (Lbcs;)V
 		ARG 0 boundingBox
 	METHOD a buildGeometry (Lbon;Lsg;FFFFFF)V
@@ -75,11 +75,11 @@ CLASS bnl net/minecraft/client/particle/Particle
 		ARG 2 z
 	METHOD b setSpriteIndex (I)V
 		ARG 0 value
-	METHOD c isTransparent ()Z
+	METHOD c hasAlpha ()Z
 	METHOD d getColorRed ()F
 	METHOD e getColorGreen ()F
-	METHOD e setAlpha (F)V
-		ARG 0 alpha
+	METHOD e setColorAlpha (F)V
+		ARG 0 value
 	METHOD f getColorBlue ()F
 	METHOD h incSpriteIndex ()V
 	METHOD i markDead ()V

mappings/net/minecraft/client/particle/ParticleAnimated.mapping

@@ -14,7 +14,7 @@ CLASS bnr net/minecraft/client/particle/ParticleAnimated
 		ARG 5 frameCount
 	METHOD a update ()V
 	METHOD a getColorMultiplier (F)I
-	METHOD c isTransparent ()Z
+	METHOD c hasAlpha ()Z
 	METHOD c setColor (I)V
 		ARG 0 color
 	METHOD d setTargetColor (I)V

mappings/net/minecraft/client/particle/ParticleSpell.mapping

@@ -56,4 +56,4 @@ CLASS bnu net/minecraft/client/particle/ParticleSpell
 			ARG 8 extra
 	FIELD a RAND Ljava/util/Random;
 	METHOD a update ()V
-	METHOD c isTransparent ()Z
+	METHOD c hasAlpha ()Z