Add Readme and rollup various changes

• Updated Readme (original readme was incorrect)
• Added clipboard module
• Fixed DrawOutline part of tests.__init__.print_bugs
• Added a NotifyParent to HwndWrapper
• Make sure that HwndWrapper.ref is initialized to None
• Refactored some methods of ComboBox and ListBox
• Updated Combo/ListBox selection methods
• Removed hardcoded paths from test_application.py
• Added section to save the document as UTF-8 in MinimalNotepadTest
• Fixed EscapeSpecials and UnEscapeSpecials in XMLHelpers
• Made sure that overly large bitmaps do not break XML writing

Minor bug fix release

Fixed some minor bugs discovered after release