1.29.0

• Add the option to specify layer file, name, and description as JSON
• Add the option to specify the description for attributes in the
  tileset metadata
• In CSV input, a trailing comma now counts as a trailing empty field
• In tippecanoe-json-tool, an empty CSV field is now an empty string,
  not null (for consistency with tile-join)

1.28.1

• Explicitly check for infinite and not-a-number input coordinates