v0.5.1

Fixed

• iOS Safari reads every range in the text that follows a styled ::first-letter one glyph
  late, so a drop cap paragraph split into words or chars came out with every unit sized for
  the character after it. The split now notices the shift, since the node's whole range comes
  back without the glyph's own box, and reads that node one glyph back. A first letter that
  does not float is measured from the line's start edge, where it always sits.
• iOS Safari also reports a zero-width rect at the end of the line before a wrap for a range
  that starts at that wrap, which read as a word broken across two lines: a Japanese paragraph
  split into words lost a line break and ran off the page. A rect with no extent along the line
  is no text and is ignored. And a fragment's room comes back a pixel wide of its glyph there,
  which read as a hyphen; a pixel or less of leftover is rounding now.