Additional args needed for wx.GridSizer if wxPython 4 is used

[michhar]

This line change would provide support for wxPython 4 (albeit still in beta). Merge if you think this will help. Note, it may break wxPython 3 support, but I don't actually see wxPython available from PyPi for versions other than 4. Hence this PR.

GridSizer needs extra arguments to work with the latest wxPython package (v4.0.0b2). These additional arguments provide vertical and horizontal gap of white space.

[huxuan]

Good to know the gap from WxPython 4 is only one line fix. I will look into the changes and come up with actual response after some verification.

[michhar]

@huxuan Have you happened to look into this further? Thanks.

[huxuan]

Hi @michhar, thanks for following up. We are proposing another big change that will not support wxpython 4 but also support Python2 and Python3 at the same time. But I think this pull request is OK to be merged first. Actually the implementation is done and I was supposed to release it recently, but the business is still ongoing. Thansk for your patience anyway.

[michhar]

@huxuan Thanks so much for your response. So, are you saying the next big version change will remove wxpython all together or add Python 3 support in addition? I'm very excited to hear about Python 3 support. Thanks again.

[huxuan]

@michhar Yep. Actually the code is frozen and we are waiting for other business process before official release. Just be a little bit more patient. :-)