Feat: try except for importing sys.stdout.buffer

[ldevillez]

Description

If we import svg2tikz in Pyzo it will fails as because Pyzo replace sys.stdout.buffer. In this case it is not used so it can be redefined (pyzo/pyzo#911)

Fixes #144

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Test suite runned

Checklist:

• My code follows the style guidelines of this project (black/pylint)
• I have updated the changelog with the corresponding changes
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes