All 1-character strings converted to primitives

"b" + "r" now changed to 'b' + 'w'.  It's more straight-forward, and may cause perfomance improvements - character primitives allocation is faster and less expensive than string creation.

Mage/src/main/java/mage/abilities/keyword/CyclingAbility.java

@@ -77,7 +77,7 @@ public class CyclingAbility extends ActivatedAbilityImpl {
     public String getRule() {
         StringBuilder rule = new StringBuilder(this.text);
         if(cost instanceof ManaCost){
-            rule.append(" ");  
+            rule.append(' ');
         }
         else{
             rule.append("—");