~jaro/balkon

ref: 229c02cd9b6458d330023a8ca56af358c376b2ac balkon/.golden/czechHelloParagraph d---------
Make paragraphRect origin always 0,0.

This convention should make it easier for the caller to properly place
the paragraph within a document.
Add ignored prefixes and suffixes to test data.

This ensures that implementation does not rely on the texts having zero
offset inside their byte arrays.
Use top edge for placing lines.
Calculate "normal" line height and pen position.
Upgrade Fragment to contain pen position.
Implement "plain" interface.