Add ability to enable/disable line wrapping #3

What is the problem or limitation you are having?

The current widget always wraps lines, so that a long line becomes multiple lines. This is sometimes suboptimal if you have a really really long line in an otherwise pretty normal file, as it'll flood up most of your view.

Describe the solution you'd like

Add a line_wrap option that allows us to disable the line wrapping.

Describe alternatives you've considered

There really isn't any alternative imho, because most IDE's have a "line wrap" option. Perhaps letting the user truncate the text themselves?

Additional context

Great widget—this is extremely exciting!!!