Word wrap for side by side by word rather than by character

Hey! This relates to #515. It would be great as a minor improvement, perhaps behind a flag to do word wrapping rather than character wrapping on the side to side view.
Example:

I think word wrapping uses " " character normally, not sure how it handles different languages

Read the related issue #515 and trace the side-by-side view implementation in the Rust codebase. Determine how word wrapping should behave, including the unresolved question of different languages, and define tests that distinguish word wrapping from the current character wrapping before implementing the change.

Written by the indexing model from the issue text.