Added support for varying log levels configurable in the server config (see log_level in default.conf)

Error logs now properly print to stderr when possible
Colour-coded logs
Addressed a scenario in which outgoing packet writes could get hung up
Fixed interface incorrect definition message on server startup

Server/src/main/content/global/skill/magic/SpellListeners.kt

@@ -1,7 +1,9 @@
 package content.global.skill.magic
 
+import core.api.log
 import core.game.node.Node
 import core.game.node.entity.player.Player
+import core.tools.Log
 import core.tools.SystemLogger
 
 object SpellListeners {
@@ -18,12 +20,12 @@ object SpellListeners {
     }
 
     fun get(spellID: Int, type: Int, book: String): ((Player,Node?) -> Unit)?{
-        SystemLogger.logInfo(this::class.java, "Getting $book:$spellID:$type")
+        log(this::class.java, Log.FINE, "Getting $book:$spellID:$type")
         return castMap["$book:$spellID:$type"]
     }
 
     fun get(spellID: Int, type: Int, id: Int, book: String): ((Player,Node?) -> Unit)?{
-        SystemLogger.logInfo(this::class.java, "Getting $book:$spellID:$type:$id")
+        log(this::class.java, Log.FINE, "Getting $book:$spellID:$type:$id")
         return castMap["$book:$spellID:$type:$id"]
     }
 

Server/src/main/content/global/skill/magic/modern/ChargeOrbSpells.java

@@ -105,7 +105,7 @@ public final class ChargeOrbSpells extends MagicSpell {
                 && objectId == 2151
                 && p.getInventory().containsItems(Runes.COSMIC_RUNE.getItem(15), Runes.WATER_RUNE.getItem(150), new Item(UNPOWERED_ORB.getId(), 5))) {
             p.setAttribute("/save:diary:seers:water-orb-can-earn", true);
-            System.out.println("can_earn_true");
+
             p.setAttribute("/save:diary:seers:water-orb", 1);
         }
         if (!meetsRequirements(entity, true, true)) {