fix disable_progress_bar_animation inverted meaning

gooey/_tmp/example_progress_bar_2.py

@@ -10,7 +10,7 @@ from gooey import Gooey, GooeyParser
 
 @Gooey(progress_regex=r"^progress: (\d+)/(\d+)$",
        progress_expr="x[0] / x[1] * 100",
-       disable_progress_bar_animation=False)
+       disable_progress_bar_animation=True)
 def main():
     parser = GooeyParser(prog="example_progress_bar_2")
     parser.add_argument("steps", type=int, default=15)

gooey/_tmp/example_progress_bar_4.py

@@ -9,7 +9,7 @@ from gooey import Gooey, GooeyParser
 
 
 @Gooey(progress_regex=r"^progress: (-?\d+)%$",
-       disable_progress_bar_animation=False)
+       disable_progress_bar_animation=True)
 def main():
     parser = GooeyParser(prog="example_progress_bar_1")
     _ = parser.parse_args(sys.argv[1:])

gooey/gui/windows/base_window.py

@@ -161,7 +161,7 @@ class BaseWindow(wx.Frame):
       if pb.GetValue() != value:
         # Windows 7 progress bar animation hack
         # http://stackoverflow.com/questions/5332616/disabling-net-progressbar-animation-when-changing-value
-        if not self.build_spec["disable_progress_bar_animation"] \
+        if self.build_spec["disable_progress_bar_animation"] \
            and sys.platform.startswith("win"):
           if pb.GetRange() == value:
             pb.SetValue(value)