fixed errors catching/raising

lib/aasm/aasm.rb

@@ -213,7 +213,7 @@ private
         end
       end
     rescue StandardError => e
-      event.fire_callbacks(:error, self, e)
+      event.fire_callbacks(:error, self, e) || raise(e)
     end
   end
 end

lib/aasm/supporting_classes/event.rb

@@ -92,10 +92,15 @@ module AASM
         case code
           when Symbol, String
             record.send(code, *args)
+            true
           when Proc
             record.instance_exec(*args, &code)
+            true
           when Array
             code.each {|a| invoke_callbacks(a, record, args)}
+            true
+          else
+            false
         end
       end