thread warning + better logging

ModsListDownloader/src/downloader/Log.java

@@ -8,11 +8,15 @@ public class Log {
 	private static PrintStream lastStream = System.out;
 
 	public static void e(String who, String msg) {
-		printNonStatic(String.valueOf(who) + "  :  " + msg, System.err);
+		printNonStatic("[ERROR]" + who + "  :  " + msg, System.err);
 	}
 
+	public static void w(String who, String msg) {
+		printNonStatic("[WARN]" + who + "  :  " + msg, System.out);
+    }
+	
 	public static void i(String who, String msg) {
-		if(Main.verbose) printNonStatic(String.valueOf(who) + "  :  " + msg, System.out);
+		if(Main.verbose) printNonStatic("[INFO]" + who + "  :  " + msg, System.out);
 	}
 
 	private static void printNonStatic(String line, PrintStream stream) {

ModsListDownloader/src/downloader/Main.java

@@ -45,6 +45,8 @@ public class Main {
 			String cmd = it.next();
 			switch (cmd) {
 				case "-t":
+					Log.w("main", "Warning using -t option can lead to corruption during download if you have a lot of cores or a slow internet");
+
 					if (threadNb != null) {
 						Log.e("main", "error conflicting arguments --thread and -t");
 						System.exit(1);