Create new export to image feature #230
Description
The code in tests.org.pyut.miniogl.TestMiniOgl used to be how Pyut printed the screen. Somewhere up to 4.0x it stopped working; Issue: #166 documented a comment from the wxpython user forum.
Well that code works again; However, I am afraid that it could stop working again so going to implement an alternate version along side my pyumldiagrams version