Remove encoding line and add spaces between classes and functions, tests

tests/test_gui/test_gui_projtree.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 """
 novelWriter – Main GUI Project Tree Class Tester
 ================================================
@@ -32,6 +31,7 @@ from nw.guimain import GuiMain
 from nw.gui.projtree import GuiProjectTree
 from nw.enum import nwItemType, nwItemClass
 
+
 @pytest.mark.gui
 def testGuiProjTree_TreeItems(qtbot, caplog, monkeypatch, nwGUI, nwMinimal):
     """Test adding and removing items from the project tree.