Update CHANGES.rst, add header for 4.2.1

CHANGES.rst

@@ -8,6 +8,21 @@
 wxPython Changelog
 ==================
 
+4.2.1
+-------------------
+* unreleased
+
+PyPI:   https://pypi.python.org/pypi/wxPython/4.2.1
+Extras: https://extras.wxPython.org/wxPython4/extras/
+Pip:    ``pip install wxPython==4.2.1``
+
+New and improved in this release:
+
+* Added wrappers for wxGenericStaticBitmap.
+
+
+
+
 4.2.0 "Rumors of my death are only slightly exaggerated"
 --------------------------------------------------------
 * 7-Aug-2022

docs/sphinx/itemToModuleMap.json

@@ -1402,6 +1402,7 @@
 "GenericDragImage":"wx.",
 "GenericMessageDialog":"wx.",
 "GenericProgressDialog":"wx.",
+"GenericStaticBitmap":"wx.",
 "GeometryCentre":"wx.",
 "GeometrySerializer":"wx.TopLevelWindow.",
 "GestureEvent":"wx.",
@@ -6821,7 +6822,7 @@
 "SashLayoutWindow":"wx.adv.",
 "SashWindow":"wx.adv.",
 "SaveFileSelector":"wx.",
-"ScaleMode":"wx.StaticBitmap.",
+"ScaleMode":"wx.GenericStaticBitmap.",
 "ScreenDC":"wx.",
 "ScrollBar":"wx.",
 "ScrollBarNameStr":"wx.",