Release 4.1.1

This release should get the program running again for everyone who had issues with 4.1.0.

• Catch any exception when we try to set UTF-8 encoding. We'll log where this fails but the program should continue running.

• The use of the tkinter.filedialog code is now contingent on a UTF-8 encoding being set. If it isn't then we'll revert to the previous non-tkinter file dialog code. The older OSes that can't handle a UTF-8 encoding will get that slightly worse file dialog (that was previously always the case before 4.1.0). Everyone else gets to enjoy the more up to date file dialog with all the shortcuts etc.