Format files with black

- Format all files with black
- Update tox.ini flake8 arguments to be compatible
- Add black to requirements-extra.txt
- Reduce ignored flake8 rules and fix a few violations

qt/problem_table.py

@@ -1,22 +1,22 @@
 # Created By: Virgil Dupras
 # Created On: 2010-04-12
 # Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
-# 
-# This software is licensed under the "GPLv3" License as described in the "LICENSE" file, 
-# which should be included with this package. The terms are also available at 
+#
+# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
+# which should be included with this package. The terms are also available at
 # http://www.gnu.org/licenses/gpl-3.0.html
 
 from qtlib.column import Column
 from qtlib.table import Table
 
+
 class ProblemTable(Table):
     COLUMNS = [
-        Column('path', defaultWidth=150),
-        Column('msg', defaultWidth=150),
+        Column("path", defaultWidth=150),
+        Column("msg", defaultWidth=150),
     ]
-    
+
     def __init__(self, model, view, **kwargs):
         super().__init__(model, view, **kwargs)
         # we have to prevent Return from initiating editing.
         # self.view.editSelected = lambda: None
-