~jaro/balkon

ref: 0e0791b319a7ed4ac45cfdcb0bf08d0dabac6410 balkon/test/Data/Text/ParagraphLayout/RectSpec.hs -rw-r--r-- 964 bytes
Hide Rect union from public interface.

The function behaves in a specific way that should not be relied on by
other modules.
Make paragraphRect origin always 0,0.

This convention should make it easier for the caller to properly place
the paragraph within a document.
Add module for working with rectangle coordinates.