Update changelog on vertical alignment.
Clarify that fragmentContentRect is unstandardised.
Set release date for v1.2.0.0
Add content rect to Fragment.
Allow trimmed whitespace to generate empty fragments.
BREAKING: Output may now contain more fragments with zero glyphs,
representing runs of whitespace that was trimmed away. These runs may
also start a box at the end of a line, instead of the beginning of the
next line.
BREAKING: Trimmed whitespace now affects line height.
Expose paragraphSafeWidth.
Allow explicit control of box collapsing.
Update changelog on paragraph alignment options.
Make RTL text overflow the left paragraph edge.
This behaviour is consistent with CSS Text Module Level 3.
BREAKING: Previously, all text would overflow the right paragraph edge,
regardless of text direction.
Fix handling of mixed line height.
Displace lines by the height of the tallest fragment in the previous
line, not the shortest one.
Remove paragraphLineHeight from Rich interface.
Expose rect unions in public interface.
Set release date for v1.1.0.0.
Update changelog on numbers and neutrals.
Update changelog on fragment order.
Update changelog on text with no strong direction.