don't fully rerender the current prompt text whenever a change happens

currently, when the user makes any input, the entire prompt is rerendered (even if no change needs to be made, e.g. pressing down when at the bottom of a `Select` prompt)
it should probably be changed to instead just go to any lines that need to be changed and rerender the changes to those lines
a good example of a library doing this is [inquire](https://github.com/mikaelmello/inquire)