Add public Rich interface.

Add user data to spans.

Add line numbers to laid out fragments.

Qualify Plain interface.

Future-proof records with options.

Bump version to 1.0.0.0.

Mention changed font size in changelog.

Fix compatibility with base < 4.15.

Set release date for v0.3.0.0.

Clarify changelog.

Expose text slicing functions.

Integrate BiDi reordering.

Bump version to 0.3.0.0.

Set release date for v0.2.1.0.

Add paragraph pagination.

Set release date for v0.2.0.0.

Remove collapsible spaces at beginning of lines.

Support hard line breaks.

Bump version to 0.2.0.0.

Add shaped runs for demo.