main: only print tokens if in debug mode

compiler/__main__.py

@@ -13,11 +13,13 @@ def main():
     2 + 3 / (8 - 1 + 3) * 1
       + 34.2
     """
+    print("Source:\n", data)
     tokenizer = Tokenizer()
     tokens = tokenizer.tokenize(data)
 
     tokens = [token for token in tokens if token.kind not in [Tokens.Blank, Tokens.Newline]]
-    pprint(tokens)
+    if rootLogger.level <= LogLevel.Debug:
+        pprint(tokens)
 
     parser = Parser(tokens)
     try: