[Request] Add code line length limit to improve readiability

[pabloderen]

This is a request to add a maximum character length to the code lines to include in CONTRIBUTING.MD #5
This will improve readability on RPS and small screens. We can use 79 characters as suggested by pep-0008.

https://www.python.org/dev/peps/pep-0008/?#maximum-line-length

[EDIT] Typos

[Amoursol]

Hello Pablo,

This comment has been added to the Contributing.md.

I'll be amending my existing code to suit over the next few days.

[adambear82]

@Amoursol the default width of the python script editor is actually rather narrow, 74 characters at my count