More Python 2 to Python 3 upgrades

src/ifcopenshell-python/ifcopenshell/entity_instance.py

@@ -100,7 +100,7 @@ for nm in ifcopenshell_wrapper.schema_names():
     register_schema_attributes(schema)
 
 
-class entity_instance(object):
+class entity_instance:
     """Base class for all IFC objects.
 
     An instantiated entity_instance will have methods of Python and the IFC class itself.

src/ifcopenshell-python/ifcopenshell/express/codegen.py

@@ -29,7 +29,7 @@ def indent(n, s):
     return "\n".join(" "*n + l for l in splitted)
 
 
-class Base(object):
+class Base:
     """
     A base class for all code generation classes. Currently only working around
     some python 2/3 incompatibilities in terms of unicode file handling.

src/ifcopenshell-python/ifcopenshell/file.py

@@ -176,7 +176,7 @@ class Transaction:
 file_dict = {}
 
 
-class file(object):
+class file:
     """Base class for containing IFC files.
 
     Class has instance methods for filtering by element Id, Type, etc.

src/ifcopenshell-python/ifcopenshell/geom/app.py

@@ -122,7 +122,7 @@ class geometry_creation_thread(QtCore.QThread):
         self.signals.completed.emit((it, self.f, list(_())))
 
 
-class configuration(object):
+class configuration:
     def __init__(self):
         try:
             import ConfigParser

src/ifcopenshell-python/ifcopenshell/geom/code_editor_pane.py

@@ -45,7 +45,7 @@ except BaseException:
     CodeEdit = QtWidgets.QPlainTextEdit
 
 
-class StdoutRedirector(object):
+class StdoutRedirector:
     """A class for redirecting stdout to this Text widget."""
 
     def __init__(self, widget):