Formating issue for some pre/code blocks

[rouilj]

Hello:
I love your readlists implementation. I use it to generate epubs that I can read on my phone when I am
offline.

However I have come across an issue with some web sites. For example, if I create a readlist of:

https://stackabuse.com/python-specific-design-patterns/

and look at the code examples wrapped in pre, some of them don't have linebreaks.
I think it is caused by the syntax highlighting. For example the original example looks
like this on the web page:

while in the epub (or HTML output) from Readlists, I get:

If you try this you will note that the third pre-block that has no syntax highlighting displays correctly
with linebreaks. Also the second pre-block has linebreaks after lines that do not have any syntax
highlighting.

I am not sure if this can be fixed in Readlists to allow the highlighting to be properly displayed
in the epub. I would be happy to lose the syntax highlighting and get linebreaks where they
should be (or line wraps and line breaks if the line is too long).

Thanks again for a great tool. It works wonderfully for my other application which is to download
EMS articles for use on the ambulance.