Create a formatter for each call.

Author: SergioEstevao

Aztec/Classes/TextKit/Configuration.swift

@@ -4,11 +4,13 @@ public final class Configuration {
 
     public static var headersWithBoldTrait = false
 
-    static var defaultBoldFormatter: AttributeFormatter = {
-        if headersWithBoldTrait {
-            return BoldWithShadowForHeadingFormatter()
-        } else {
-            return BoldFormatter()
+    static var defaultBoldFormatter: AttributeFormatter {
+        get {
+            if headersWithBoldTrait {
+                return BoldWithShadowForHeadingFormatter()
+            } else {
+                return BoldFormatter()
+            }
         }
-    } ()
+    }
 }