Minor tweak on Exp system + Diet's Cygnus quest line

Changed minimum level required to gain EXP of mob from -5 to -20 the mob level (players below that level sees a red-colored font when displaying higher-leveled mob HPbar). Thanks to DietStory dev team, fixed some quests for KoC.

build/built-jar.properties

@@ -1,4 +1,4 @@
-#Wed, 04 Oct 2017 01:18:34 -0300
+#Thu, 05 Oct 2017 16:16:32 -0300
 
 
 C\:\\Nexon\\MapleSolaxia\\MapleSolaxiaV2=