Report stack traces through the logger (#1050)

src/main/java/carpet/script/CarpetEventServer.java

@@ -1174,7 +1174,7 @@ public class CarpetEventServer
         }
         catch (NullPointerException | InvalidCallbackException | IntegrityException error)
         {
-            CarpetScriptServer.LOG.error("Got exception: "+error.getMessage());
+            CarpetScriptServer.LOG.error("Got exception when running event call ", error);
             return CallbackResult.FAIL;
         }
     }

src/main/java/carpet/script/Expression.java

@@ -377,7 +377,7 @@ public class Expression
         if (exc instanceof ResolvedException)
             return exc;
         // unexpected really - should be caught earlier and converted to InternalExpressionException
-        exc.printStackTrace();
+        CarpetSettings.LOG.error("Unexpected exception while running Scarpet code", exc);
         return new ExpressionException(c, e, token, "Error while evaluating expression: "+exc);
     }
 

src/main/java/carpet/script/value/Value.java

@@ -1,5 +1,6 @@
 package carpet.script.value;
 
+import carpet.CarpetSettings;
 import carpet.script.exception.InternalExpressionException;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonPrimitive;
@@ -42,7 +43,7 @@ public abstract class Value implements Comparable<Value>, Cloneable
         catch (CloneNotSupportedException e)
         {
             // should not happen
-            e.printStackTrace();
+            CarpetSettings.LOG.catching(e);
             throw new InternalExpressionException("Variable of type "+getTypeString()+" is not cloneable. Tell gnembon about it, this shoudn't happen");
         }
         copy.boundVariable = var;