Fix style: white space around operators.

Fix style: white space in multi-line lists.

Fix style: white space in exports and imports.

Fix style: bullet points in comments.

Fix style: non-ASCII characters in comments.

Fix style: remove duplicate spaces.

Mark some lists as explicitly non-empty.

Fix typos in comments.

Bump version to 0.2.1.1.

Set release date for v0.2.1.0.

Fix data types in harfbuzz-pure.

Improve documentation for pagination.

Prepare pagination for future layout types.

Add paragraph pagination.

Bump version to 0.2.1.0.

Implement splitting ParagraphLayout into lines.

Implement generic pagination internally.

Better format ParagraphConstruction documentation.

Bump version to 0.2.0.1.

Remove non-existent extra-source-files.