Fix style: small Prelude imports.

Fix style: external vs internal imports.

Fix style: unnecessary do notation.

Fix style: white space in lambdas.

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: remove duplicate spaces.

Mark some lists as explicitly non-empty.

Fix typos in comments.

Fix data types in harfbuzz-pure.

Add paragraph pagination.

Implement generic pagination internally.

Separate module for the ParagraphLayout type.

Test removing spaces around lines.

Remove collapsible spaces at beginning of lines.

Ensure tests do not pass with missing files.

Allow empty lines when hard line breaking.

Support hard line breaks.