Bitmap.SetSize() is deprecated in wxpython 4.0+, wxpython<4 no longer available through PyPI or Conda-Forge

[errthumt]

Problem

wxpython 4.0 no longer has SetSize method on Bitmap objects. wxpython<4 is no longer available through standard channels. Standard install methods will pull wxpython 4.x and fail when invoking pdfgui

Install/Startup Method

conda create -n diffpy_test -c conda-forge diffpy.pdfgui
conda activate diffpy_test
pdfgui

Traceback

Traceback (most recent call last):
  File "C:\Users\travi\miniconda3\envs\diffpy_test\Lib\site-packages\diffpy\pdfgui\gui\main.py", line 26, in OnInit
    self.frame = MainFrame(None, -1, "")
                 ~~~~~~~~~^^^^^^^^^^^^^^
  File "C:\Users\travi\miniconda3\envs\diffpy_test\Lib\site-packages\diffpy\pdfgui\gui\mainframe.py", line 193, in __init__
    self.__customProperties()
    ~~~~~~~~~~~~~~~~~~~~~~~^^
  File "C:\Users\travi\miniconda3\envs\diffpy_test\Lib\site-packages\diffpy\pdfgui\gui\mainframe.py", line 421, in __customProperties
    self.__setupToolBar()  # Make the toolbar
    ~~~~~~~~~~~~~~~~~~~^^
  File "C:\Users\travi\miniconda3\envs\diffpy_test\Lib\site-packages\diffpy\pdfgui\gui\mainframe.py", line 683, in __setupToolBar
    bitmap.SetSize(size)
    ^^^^^^^^^^^^^^
AttributeError: 'Bitmap' object has no attribute 'SetSize'. Did you mean: 'GetSize'?
OnInit returned false, exiting...

Proposed solution

Quick patch: commenting out any bitmap.SetSize calls in gui/mainframe.py allows startup, but I'm not familiar enough with the whole source code to say that this isn't broken elsewhere.