Fix pubsub error

nuxhash/gui/benchmarks.py

@@ -4,7 +4,7 @@
 import wx
 import wx.dataview
 from wx.lib.newevent import NewCommandEvent
-from wx.lib.pubsub import pub
+from pubsub import pub
 from wx.lib.scrolledpanel import ScrolledPanel
 
 from nuxhash import utils

nuxhash/gui/main.py

@@ -7,7 +7,7 @@
 from subprocess import Popen
 
 import wx
-from wx.lib.pubsub import pub
+from pubsub import pub
 from wx.lib.newevent import NewCommandEvent
 
 import nuxhash.settings

nuxhash/gui/mining.py

@@ -9,7 +9,7 @@
 
 import wx
 import wx.dataview
-from wx.lib.pubsub import pub
+from pubsub import pub
 
 from nuxhash import nicehash, utils
 from nuxhash.bitcoin import check_bc
@@ -88,8 +88,7 @@ def __init__(self, parent, *args, devices=[], **kwargs):
 
         # Add start/stop button.
         self._StartStop = wx.Button(self, label='Start Mining')
-        bottomSizer.Add(self._StartStop, wx.SizerFlags().Expand()
-                                                        .Center())
+        bottomSizer.Add(self._StartStop, wx.SizerFlags().Center())
         self.Bind(wx.EVT_BUTTON, self.OnStartStop, self._StartStop)
 
     def _OnSettings(self, settings):

nuxhash/gui/settings.py

@@ -2,7 +2,7 @@
 from functools import wraps
 
 import wx
-from wx.lib.pubsub import pub
+from pubsub import pub
 from wx.lib.agw.hyperlink import HyperLinkCtrl
 
 from nuxhash import settings