Add option to turn on wrapping in preview pane.

[RobinTruax]

Hi! Your plugin is wonderful; thanks for creating it. I was wondering if there is/could be an option to turn on wrapping in the preview pane. I'm using this tool with LaTeX, which often means longer lines (usually, a line is a sentence). In this -- and I'm sure other -- use cases, having an option to turn on wrapping (either by default or using a keymap) would be lovely.