fixed issue with random prints when dill pickling progressbar. Fixes: #263

Author: wolph

tests/test_dill_pickle.py

@@ -0,0 +1,17 @@
+import pickle
+
+import dill
+
+import progressbar
+
+
+def test_dill():
+    bar = progressbar.ProgressBar()
+    assert bar._started == False
+    assert bar._finished == False
+
+    assert not dill.pickles(bar)
+
+    assert bar._started == False
+    # Should be false because it never should have started/initialized
+    assert bar._finished == False