Parley currently always wraps text is it overflows the max-advance. We should add a style that disables soft-wrapping for a span of text.

CSS calls this text-wrap-mode (https://developer.mozilla.org/en-US/docs/Web/CSS/text-wrap-mode). Parley currently always behaves as if text-wrap-mode: wrap. We should implement text-wrap-mode: nowrap or equivalent functionality.